231431404525 has 48 divisors (see below), whose sum is σ = 300472893504. Its totient is φ = 176663738880.

The previous prime is 231431404513. The next prime is 231431404543. The reversal of 231431404525 is 525404134132.

It is not a de Polignac number, because 231431404525 - 2⁹ = 231431404013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10507174 + ... + 10529176.

It is an arithmetic number, because the mean of its divisors is an integer number (6259851948).

Almost surely, 2^231431404525 is an apocalyptic number.

231431404525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231431404525 is a deficient number, since it is larger than the sum of its proper divisors (69041488979).

231431404525 is a wasteful number, since it uses less digits than its factorization.

231431404525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22270 (or 22265 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 231431404525 its reverse (525404134132), we get a palindrome (756835538657).

The spelling of 231431404525 in words is "two hundred thirty-one billion, four hundred thirty-one million, four hundred four thousand, five hundred twenty-five".