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20310002132 = 227725357219
BaseRepresentation
bin10010111010100100…
…100000100111010100
31221102102212000020012
4102322210200213110
5313043330032012
613155201455352
71316205112130
oct227244404724
957372760205
1020310002132
118682515232
123b29941558
131bb8998254
14da95403c0
157dd0a3622
hex4ba9209d4

20310002132 has 12 divisors (see below), whose sum is σ = 40620004320. Its totient is φ = 8704286616.

The previous prime is 20310002123. The next prime is 20310002137. The reversal of 20310002132 is 23120001302.

It is a happy number.

20310002132 is an admirable number.

It is a super-3 number, since 3×203100021323 (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310002137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362678582 + ... + 362678637.

It is an arithmetic number, because the mean of its divisors is an integer number (3385000360).

Almost surely, 220310002132 is an apocalyptic number.

It is an amenable number.

20310002132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20310002132 is a wasteful number, since it uses less digits than its factorization.

20310002132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725357230 (or 725357228 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20310002132 its reverse (23120001302), we get a palindrome (43430003434).

The spelling of 20310002132 in words is "twenty billion, three hundred ten million, two thousand, one hundred thirty-two".

Divisors: 1 2 4 7 14 28 725357219 1450714438 2901428876 5077500533 10155001066 20310002132