130640631 has 16 divisors (see below), whose sum is σ = 201201408. Its totient is φ = 74518400.

The previous prime is 130640617. The next prime is 130640651. The reversal of 130640631 is 136046031.

It is not a de Polignac number, because 130640631 - 2⁶ = 130640567 is a prime.

It is a super-2 number, since 2×130640631² = 34133948936156322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130640611) 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, 115875 + ... + 116996.

It is an arithmetic number, because the mean of its divisors is an integer number (12575088).

Almost surely, 2^130640631 is an apocalyptic number.

130640631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

130640631 is a deficient number, since it is larger than the sum of its proper divisors (70560777).

130640631 is a wasteful number, since it uses less digits than its factorization.

130640631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232902.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 130640631 is about 11429.8132530676. The cubic root of 130640631 is about 507.4104686472.

Adding to 130640631 its reverse (136046031), we get a palindrome (266686662).

The spelling of 130640631 in words is "one hundred thirty million, six hundred forty thousand, six hundred thirty-one".