231431401113 has 32 divisors (see below), whose sum is σ = 352325071872. Its totient is φ = 133757659200.

The previous prime is 231431401099. The next prime is 231431401133. The reversal of 231431401113 is 311104134132.

It is a happy number.

It is not a de Polignac number, because 231431401113 - 2⁹ = 231431400601 is a prime.

It is a super-2 number, since 2×231431401113² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231431401133) 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, 209370 + ... + 711827.

It is an arithmetic number, because the mean of its divisors is an integer number (11010158496).

Almost surely, 2^231431401113 is an apocalyptic number.

231431401113 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

231431401113 is a deficient number, since it is larger than the sum of its proper divisors (120893670759).

231431401113 is a wasteful number, since it uses less digits than its factorization.

231431401113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921565.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 231431401113 its reverse (311104134132), we get a palindrome (542535535245).

The spelling of 231431401113 in words is "two hundred thirty-one billion, four hundred thirty-one million, four hundred one thousand, one hundred thirteen".