23311031031 has 12 divisors (see below), whose sum is σ = 33678999120. Its totient is φ = 15537221280.

The previous prime is 23311031017. The next prime is 23311031059. The reversal of 23311031031 is 13013011332.

It is a happy number.

It is not a de Polignac number, because 23311031031 - 2⁷ = 23311030903 is a prime.

It is a super-2 number, since 2×23311031031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23311030995 and 23311031013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23311031131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 245910 + ... + 327251.

It is an arithmetic number, because the mean of its divisors is an integer number (2806583260).

Almost surely, 2^23311031031 is an apocalyptic number.

23311031031 is a deficient number, since it is larger than the sum of its proper divisors (10367968089).

23311031031 is a wasteful number, since it uses less digits than its factorization.

23311031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577686 (or 577683 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 23311031031 its reverse (13013011332), we get a palindrome (36324042363).

The spelling of 23311031031 in words is "twenty-three billion, three hundred eleven million, thirty-one thousand, thirty-one".