231532134103431 has 32 divisors (see below), whose sum is σ = 392019286464000. Its totient is φ = 132301644079680.

The previous prime is 231532134103429. The next prime is 231532134103441. The reversal of 231532134103431 is 134301431235132.

231532134103431 is a `hidden beast` number, since 2 + 3 + 1 + 5 + 3 + 213 + 4 + 1 + 0 + 3 + 431 = 666.

It is not a de Polignac number, because 231532134103431 - 2¹ = 231532134103429 is a prime.

It is a super-2 number, since 2×231532134103431² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231532134103441) 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, 930081 + ... + 21539018.

It is an arithmetic number, because the mean of its divisors is an integer number (12250602702000).

Almost surely, 2^{231532134103431} is an apocalyptic number.

231532134103431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

231532134103431 is a deficient number, since it is larger than the sum of its proper divisors (160487152360569).

231532134103431 is a wasteful number, since it uses less digits than its factorization.

231532134103431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22523636 (or 22523630 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

Adding to 231532134103431 its reverse (134301431235132), we get a palindrome (365833565338563).

The spelling of 231532134103431 in words is "two hundred thirty-one trillion, five hundred thirty-two billion, one hundred thirty-four million, one hundred three thousand, four hundred thirty-one".