231262240478431 has 16 divisors (see below), whose sum is σ = 234738757693440. Its totient is φ = 227802559593280.

The previous prime is 231262240478389. The next prime is 231262240478441. The reversal of 231262240478431 is 134874042262132.

It is a cyclic number.

It is not a de Polignac number, because 231262240478431 - 2⁷ = 231262240478303 is a prime.

It is a super-2 number, since 2×231262240478431² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231262240478441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93156396 + ... + 95606686.

It is an arithmetic number, because the mean of its divisors is an integer number (14671172355840).

Almost surely, 2^{231262240478431} is an apocalyptic number.

231262240478431 is a deficient number, since it is larger than the sum of its proper divisors (3476517215009).

231262240478431 is a wasteful number, since it uses less digits than its factorization.

231262240478431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2453726.

The product of its (nonzero) digits is 3096576, while the sum is 49.

The spelling of 231262240478431 in words is "two hundred thirty-one trillion, two hundred sixty-two billion, two hundred forty million, four hundred seventy-eight thousand, four hundred thirty-one".