231000390625 has 27 divisors (see below), whose sum is σ = 289126316811. Its totient is φ = 184560000000.

The previous prime is 231000390613. The next prime is 231000390653. The reversal of 231000390625 is 526093000132.

The square root of 231000390625 is 480625.

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

It can be written as a sum of positive squares in 13 ways, for example, as 2692260769 + 228308129856 = 51887^2 + 477816^2 .

It is not a de Polignac number, because 231000390625 - 2⁹ = 231000390113 is a prime.

It is a super-2 number, since 2×231000390625² (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 26 ways as a sum of consecutive naturals, for example, 300390241 + ... + 300391009.

Almost surely, 2^231000390625 is an apocalyptic number.

231000390625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

231000390625 is the 480625-th square number.

231000390625 is the 240313-rd centered octagonal number.

It is an amenable number.

231000390625 is a deficient number, since it is larger than the sum of its proper divisors (58125926186).

231000390625 is an frugal number, since it uses more digits than its factorization.

231000390625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

Adding to 231000390625 its reverse (526093000132), we get a palindrome (757093390757).

The spelling of 231000390625 in words is "two hundred thirty-one billion, three hundred ninety thousand, six hundred twenty-five".