231531436425 has 192 divisors, whose sum is σ = 420253102080. Its totient is φ = 112097157120.

The previous prime is 231531436399. The next prime is 231531436441. The reversal of 231531436425 is 524634135132.

231531436425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231531436425 - 2⁶ = 231531436361 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1019962162 + ... + 1019962388.

It is an arithmetic number, because the mean of its divisors is an integer number (2188818240).

Almost surely, 2^231531436425 is an apocalyptic number.

231531436425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231531436425 is a deficient number, since it is larger than the sum of its proper divisors (188721665655).

231531436425 is a wasteful number, since it uses less digits than its factorization.

231531436425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560 (or 555 counting only the distinct ones).

The product of its digits is 259200, while the sum is 39.

The spelling of 231531436425 in words is "two hundred thirty-one billion, five hundred thirty-one million, four hundred thirty-six thousand, four hundred twenty-five".