231130025 has 24 divisors (see below), whose sum is σ = 328133760. Its totient is φ = 158204160.

The previous prime is 231130019. The next prime is 231130027. The reversal of 231130025 is 520031132.

It is a de Polignac number, because none of the positive numbers 2^k-231130025 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231129985 and 231130012.

It is not an unprimeable number, because it can be changed into a prime (231130027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154481 + ... + 155969.

It is an arithmetic number, because the mean of its divisors is an integer number (13672240).

Almost surely, 2^231130025 is an apocalyptic number.

231130025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231130025 is a deficient number, since it is larger than the sum of its proper divisors (97003735).

231130025 is a wasteful number, since it uses less digits than its factorization.

231130025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393 (or 2388 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 231130025 is about 15202.9610602672. The cubic root of 231130025 is about 613.6943459531.

Adding to 231130025 its reverse (520031132), we get a palindrome (751161157).

The spelling of 231130025 in words is "two hundred thirty-one million, one hundred thirty thousand, twenty-five".