130531512 has 32 divisors (see below), whose sum is σ = 330929280. Its totient is φ = 42897120.

The previous prime is 130531487. The next prime is 130531517. The reversal of 130531512 is 215135031.

It is a super-2 number, since 2×130531512² = 34076951250012288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130531517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36598 + ... + 40005.

It is an arithmetic number, because the mean of its divisors is an integer number (10341540).

Almost surely, 2^130531512 is an apocalyptic number.

130531512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

130531512 is an abundant number, since it is smaller than the sum of its proper divisors (200397768).

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

130531512 is a wasteful number, since it uses less digits than its factorization.

130531512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76683 (or 76679 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 130531512 is about 11425.0388183148. The cubic root of 130531512 is about 507.2691559350.

Adding to 130531512 its reverse (215135031), we get a palindrome (345666543).

The spelling of 130531512 in words is "one hundred thirty million, five hundred thirty-one thousand, five hundred twelve".