Search a number
-
+
23230131663431 = 7111723771585733
BaseRepresentation
bin1010100100000101011111…
…01111101111001001000111
310001020210000211001120020202
411102002233233233021013
511021100302201212211
6121223435233521115
74615215214111160
oct522025757571107
9101223024046222
1023230131663431
1174469307966a0
1227321a411319b
13cc6790876844
145a44b6d54767
152a4407ed453b
hex1520afbef247

23230131663431 has 32 divisors (see below), whose sum is σ = 31999203560448. Its totient is φ = 16295890659840.

The previous prime is 23230131663421. The next prime is 23230131663439. The reversal of 23230131663431 is 13436613103232.

It is not a de Polignac number, because 23230131663431 - 234 = 23212951794247 is a prime.

It is a super-2 number, since 2×232301316634312 (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23230131663439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 385762760 + ... + 385822973.

It is an arithmetic number, because the mean of its divisors is an integer number (999975111264).

Almost surely, 223230131663431 is an apocalyptic number.

23230131663431 is a deficient number, since it is larger than the sum of its proper divisors (8769071897017).

23230131663431 is a wasteful number, since it uses less digits than its factorization.

23230131663431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771585791.

The product of its (nonzero) digits is 139968, while the sum is 38.

Adding to 23230131663431 its reverse (13436613103232), we get a palindrome (36666744766663).

The spelling of 23230131663431 in words is "twenty-three trillion, two hundred thirty billion, one hundred thirty-one million, six hundred sixty-three thousand, four hundred thirty-one".

Divisors: 1 7 11 17 23 77 119 161 187 253 391 1309 1771 2737 4301 30107 771585733 5401100131 8487443063 13116957461 17746471859 59412101441 91818702227 124225303013 144286532071 195211190449 301690021603 1010005724497 1366478333143 2111830151221 3318590237633 23230131663431