231130232130 has 32 divisors (see below), whose sum is σ = 633957208704. Its totient is φ = 52829767296.

The previous prime is 231130232071. The next prime is 231130232143. The reversal of 231130232130 is 31232031132.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 231130232097 and 231130232106.

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, 550309867 + ... + 550310286.

It is an arithmetic number, because the mean of its divisors is an integer number (19811162772).

Almost surely, 2^231130232130 is an apocalyptic number.

231130232130 is an abundant number, since it is smaller than the sum of its proper divisors (402826976574).

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

231130232130 is a wasteful number, since it uses less digits than its factorization.

231130232130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100620170.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 231130232130 its reverse (31232031132), we get a palindrome (262362263262).

It can be divided in two parts, 2311302 and 32130, that added together give a palindrome (2343432).

The spelling of 231130232130 in words is "two hundred thirty-one billion, one hundred thirty million, two hundred thirty-two thousand, one hundred thirty".