231312130 has 32 divisors (see below), whose sum is σ = 480069504. Its totient is φ = 78602496.

The previous prime is 231312121. The next prime is 231312139. The reversal of 231312130 is 31213132.

It is an interprime number because it is at equal distance from previous prime (231312121) and next prime (231312139).

It is not an unprimeable number, because it can be changed into a prime (231312139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6712 + ... + 22531.

It is an arithmetic number, because the mean of its divisors is an integer number (15002172).

Almost surely, 2^231312130 is an apocalyptic number.

231312130 is an abundant number, since it is smaller than the sum of its proper divisors (248757374).

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

231312130 is a wasteful number, since it uses less digits than its factorization.

231312130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29370.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 231312130 is about 15208.9490103689. The cubic root of 231312130 is about 613.8554781571.

Adding to 231312130 its reverse (31213132), we get a palindrome (262525262).

The spelling of 231312130 in words is "two hundred thirty-one million, three hundred twelve thousand, one hundred thirty".