231113033431 has 24 divisors (see below), whose sum is σ = 271468428000. Its totient is φ = 196166505024.

The previous prime is 231113033429. The next prime is 231113033441. The reversal of 231113033431 is 134330311132.

It is not a de Polignac number, because 231113033431 - 2¹ = 231113033429 is a prime.

It is a super-2 number, since 2×231113033431² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231113033396 and 231113033405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231113033441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10024225 + ... + 10047253.

It is an arithmetic number, because the mean of its divisors is an integer number (11311184500).

Almost surely, 2^231113033431 is an apocalyptic number.

231113033431 is a deficient number, since it is larger than the sum of its proper divisors (40355394569).

231113033431 is a wasteful number, since it uses less digits than its factorization.

231113033431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25031 (or 25024 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 231113033431 its reverse (134330311132), we get a palindrome (365443344563).

The spelling of 231113033431 in words is "two hundred thirty-one billion, one hundred thirteen million, thirty-three thousand, four hundred thirty-one".