231486157431 has 24 divisors (see below), whose sum is σ = 345186258560. Its totient is φ = 149332377600.

The previous prime is 231486157417. The next prime is 231486157457. The reversal of 231486157431 is 134751684132.

231486157431 is a `hidden beast` number, since 2 + 3 + 1 + 48 + 6 + 1 + 574 + 31 = 666.

It is not a de Polignac number, because 231486157431 - 2⁶ = 231486157367 is a prime.

It is a super-2 number, since 2×231486157431² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231486150431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3719175 + ... + 3780903.

Almost surely, 2^231486157431 is an apocalyptic number.

231486157431 is a deficient number, since it is larger than the sum of its proper divisors (113700101129).

231486157431 is a wasteful number, since it uses less digits than its factorization.

231486157431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75207 (or 75204 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 231486157431 in words is "two hundred thirty-one billion, four hundred eighty-six million, one hundred fifty-seven thousand, four hundred thirty-one".