130312332 has 18 divisors (see below), whose sum is σ = 329400708. Its totient is φ = 43437432.

The previous prime is 130312289. The next prime is 130312339. The reversal of 130312332 is 233213031.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (130312339) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1809858 + ... + 1809929.

Almost surely, 2^130312332 is an apocalyptic number.

130312332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

130312332 is an abundant number, since it is smaller than the sum of its proper divisors (199088376).

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

130312332 is a wasteful number, since it uses less digits than its factorization.

130312332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3619797 (or 3619792 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 130312332 is about 11415.4426983801. The cubic root of 130312332 is about 506.9850724454.

Adding to 130312332 its reverse (233213031), we get a palindrome (363525363).

The spelling of 130312332 in words is "one hundred thirty million, three hundred twelve thousand, three hundred thirty-two".