231672157431 has 64 divisors (see below), whose sum is σ = 390893174784. Its totient is φ = 119972476800.

The previous prime is 231672157397. The next prime is 231672157447. The reversal of 231672157431 is 134751276132.

It is not a de Polignac number, because 231672157431 - 2¹⁷ = 231672026359 is a prime.

It is a super-2 number, since 2×231672157431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231672157471) 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 63 ways as a sum of consecutive naturals, for example, 72825 + ... + 684578.

It is an arithmetic number, because the mean of its divisors is an integer number (6107705856).

Almost surely, 2^231672157431 is an apocalyptic number.

231672157431 is a deficient number, since it is larger than the sum of its proper divisors (159221017353).

231672157431 is a wasteful number, since it uses less digits than its factorization.

231672157431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757484.

The product of its digits is 211680, while the sum is 42.

The spelling of 231672157431 in words is "two hundred thirty-one billion, six hundred seventy-two million, one hundred fifty-seven thousand, four hundred thirty-one".