231022125 has 40 divisors (see below), whose sum is σ = 430712568. Its totient is φ = 123206400.

The previous prime is 231022123. The next prime is 231022171. The reversal of 231022125 is 521220132.

It can be written as a sum of positive squares in 4 ways, for example, as 5391684 + 225630441 = 2322^2 + 15021^2 .

It is not a de Polignac number, because 231022125 - 2¹ = 231022123 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 231022098 and 231022107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231022123) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1284 + ... + 21533.

Almost surely, 2^231022125 is an apocalyptic number.

231022125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231022125 is a deficient number, since it is larger than the sum of its proper divisors (199690443).

231022125 is an equidigital number, since it uses as much as digits as its factorization.

231022125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22844 (or 22825 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 231022125 is about 15199.4119952056. The cubic root of 231022125 is about 613.5988327214.

Adding to 231022125 its reverse (521220132), we get a palindrome (752242257).

The spelling of 231022125 in words is "two hundred thirty-one million, twenty-two thousand, one hundred twenty-five".