231321410431 has 4 divisors (see below), whose sum is σ = 231322442272. Its totient is φ = 231320378592.

The previous prime is 231321410423. The next prime is 231321410477. The reversal of 231321410431 is 134014123132.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 231321410431 - 2³ = 231321410423 is a prime.

It is a super-2 number, since 2×231321410431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231321410396 and 231321410405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231321410231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22071 + ... + 680536.

It is an arithmetic number, because the mean of its divisors is an integer number (57830610568).

Almost surely, 2^231321410431 is an apocalyptic number.

231321410431 is a deficient number, since it is larger than the sum of its proper divisors (1031841).

231321410431 is an equidigital number, since it uses as much as digits as its factorization.

231321410431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031840.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 231321410431 its reverse (134014123132), we get a palindrome (365335533563).

The spelling of 231321410431 in words is "two hundred thirty-one billion, three hundred twenty-one million, four hundred ten thousand, four hundred thirty-one".