231545130 has 32 divisors (see below), whose sum is σ = 560093184. Its totient is φ = 61258176.

The previous prime is 231545113. The next prime is 231545143. The reversal of 231545130 is 31545132.

231545130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231545130² = 107226294453433800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231545130.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26577 + ... + 34196.

It is an arithmetic number, because the mean of its divisors is an integer number (17502912).

Almost surely, 2^231545130 is an apocalyptic number.

231545130 is an abundant number, since it is smaller than the sum of its proper divisors (328548054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231545130 is a wasteful number, since it uses less digits than its factorization.

231545130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60910.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 231545130 is about 15216.6070462505. The cubic root of 231545130 is about 614.0615205716.

The spelling of 231545130 in words is "two hundred thirty-one million, five hundred forty-five thousand, one hundred thirty".