231496225 has 27 divisors (see below), whose sum is σ = 306647257. Its totient is φ = 173329280.

The previous prime is 231496217. The next prime is 231496229. The reversal of 231496225 is 522694132.

The square root of 231496225 is 15215.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 5414929 + 226081296 = 2327^2 + 15036^2 .

It is not a de Polignac number, because 231496225 - 2³ = 231496217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231496229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1293186 + ... + 1293364.

Almost surely, 2^231496225 is an apocalyptic number.

231496225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

231496225 is the 15215-th square number.

231496225 is the 7608-th centered octagonal number.

It is an amenable number.

231496225 is a deficient number, since it is larger than the sum of its proper divisors (75151032).

231496225 is an equidigital number, since it uses as much as digits as its factorization.

231496225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402 (or 201 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The cubic root of 231496225 is about 614.0182852374.

The spelling of 231496225 in words is "two hundred thirty-one million, four hundred ninety-six thousand, two hundred twenty-five".