231131130 has 32 divisors (see below), whose sum is σ = 555422400. Its totient is φ = 61556352.

The previous prime is 231131129. The next prime is 231131141. The reversal of 231131130 is 31131132.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 21286 + ... + 30254.

It is an arithmetic number, because the mean of its divisors is an integer number (17356950).

Almost surely, 2^231131130 is an apocalyptic number.

231131130 is an abundant number, since it is smaller than the sum of its proper divisors (324291270).

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

231131130 is a wasteful number, since it uses less digits than its factorization.

231131130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9838.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 231131130 is about 15202.9974018284. The cubic root of 231131130 is about 613.6953239469.

Adding to 231131130 its reverse (31131132), we get a palindrome (262262262).

The spelling of 231131130 in words is "two hundred thirty-one million, one hundred thirty-one thousand, one hundred thirty".