231433155625 has 45 divisors (see below), whose sum is σ = 336537435267. Its totient is φ = 158639292000.

The previous prime is 231433155617. The next prime is 231433155643. The reversal of 231433155625 is 526551334132.

The square root of 231433155625 is 481075.

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

It can be written as a sum of positive squares in 7 ways, for example, as 230343363481 + 1089792144 = 479941^2 + 33012^2 .

It is not a de Polignac number, because 231433155625 - 2³ = 231433155617 is a prime.

It is a super-2 number, since 2×231433155625² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 84186751 + ... + 84189499.

Almost surely, 2^231433155625 is an apocalyptic number.

231433155625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

231433155625 is the 481075-th square number.

231433155625 is the 240538-th centered octagonal number.

It is an amenable number.

231433155625 is a deficient number, since it is larger than the sum of its proper divisors (105104279642).

231433155625 is an frugal number, since it uses more digits than its factorization.

231433155625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5532 (or 2761 counting only the distinct ones).

The product of its digits is 324000, while the sum is 40.

Adding to 231433155625 its reverse (526551334132), we get a palindrome (757984489757).

The spelling of 231433155625 in words is "two hundred thirty-one billion, four hundred thirty-three million, one hundred fifty-five thousand, six hundred twenty-five".