231404340032 has 28 divisors (see below), whose sum is σ = 459787125636. Its totient is φ = 115552465920.

The previous prime is 231404340007. The next prime is 231404340053. The reversal of 231404340032 is 230043404132.

It can be written as a sum of positive squares in 2 ways, for example, as 133470392896 + 97933947136 = 365336^2 + 312944^2 .

It is a super-2 number, since 2×231404340032² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231404339983 and 231404340010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2289269 + ... + 2388212.

Almost surely, 2^231404340032 is an apocalyptic number.

It is an amenable number.

231404340032 is a deficient number, since it is larger than the sum of its proper divisors (228382785604).

231404340032 is an equidigital number, since it uses as much as digits as its factorization.

231404340032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4678266 (or 4678256 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 231404340032 its reverse (230043404132), we get a palindrome (461447744164).

The spelling of 231404340032 in words is "two hundred thirty-one billion, four hundred four million, three hundred forty thousand, thirty-two".