231534531343425 has 48 divisors (see below), whose sum is σ = 388874103896960. Its totient is φ = 121541912640000.

The previous prime is 231534531343421. The next prime is 231534531343429. The reversal of 231534531343425 is 524343135435132.

It is an interprime number because it is at equal distance from previous prime (231534531343421) and next prime (231534531343429).

It is not a de Polignac number, because 231534531343425 - 2² = 231534531343421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231534531343421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 92547916 + ... + 95016765.

Almost surely, 2^{231534531343425} is an apocalyptic number.

231534531343425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231534531343425 is a deficient number, since it is larger than the sum of its proper divisors (157339572553535).

231534531343425 is a wasteful number, since it uses less digits than its factorization.

231534531343425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187564954 (or 187564949 counting only the distinct ones).

The product of its digits is 7776000, while the sum is 48.

Adding to 231534531343425 its reverse (524343135435132), we get a palindrome (755877666778557).

The spelling of 231534531343425 in words is "two hundred thirty-one trillion, five hundred thirty-four billion, five hundred thirty-one million, three hundred forty-three thousand, four hundred twenty-five".