130131640 has 32 divisors (see below), whose sum is σ = 296926560. Its totient is φ = 51318400.

The previous prime is 130131637. The next prime is 130131641. The reversal of 130131640 is 46131031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130131641) 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, 20071 + ... + 25750.

It is an arithmetic number, because the mean of its divisors is an integer number (9278955).

Almost surely, 2^130131640 is an apocalyptic number.

130131640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130131640 is an abundant number, since it is smaller than the sum of its proper divisors (166794920).

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

130131640 is a wasteful number, since it uses less digits than its factorization.

130131640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45903 (or 45899 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 130131640 is about 11407.5255862084. The cubic root of 130131640 is about 506.7506343600.

Adding to 130131640 its reverse (46131031), we get a palindrome (176262671).

The spelling of 130131640 in words is "one hundred thirty million, one hundred thirty-one thousand, six hundred forty".