231125215 has 32 divisors (see below), whose sum is σ = 309196800. Its totient is φ = 165110400.

The previous prime is 231125207. The next prime is 231125221. The reversal of 231125215 is 512521132.

It is not a de Polignac number, because 231125215 - 2³ = 231125207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117490 + ... + 119440.

It is an arithmetic number, because the mean of its divisors is an integer number (9662400).

Almost surely, 2^231125215 is an apocalyptic number.

231125215 is a deficient number, since it is larger than the sum of its proper divisors (78071585).

231125215 is a wasteful number, since it uses less digits than its factorization.

231125215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2047.

The product of its digits is 600, while the sum is 22.

The square root of 231125215 is about 15202.8028665769. The cubic root of 231125215 is about 613.6900887675.

Adding to 231125215 its reverse (512521132), we get a palindrome (743646347).

The spelling of 231125215 in words is "two hundred thirty-one million, one hundred twenty-five thousand, two hundred fifteen".