130681631 has 4 divisors (see below), whose sum is σ = 130722792. Its totient is φ = 130640472.

The previous prime is 130681597. The next prime is 130681657. The reversal of 130681631 is 136186031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130681631 is a prime.

It is a super-2 number, since 2×130681631² = 34155377361640322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130681594 and 130681603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130681231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15380 + ... + 22313.

It is an arithmetic number, because the mean of its divisors is an integer number (32680698).

Almost surely, 2^130681631 is an apocalyptic number.

130681631 is a deficient number, since it is larger than the sum of its proper divisors (41161).

130681631 is an equidigital number, since it uses as much as digits as its factorization.

130681631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41160.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 130681631 is about 11431.6066674812. The cubic root of 130681631 is about 507.4635446647.

The spelling of 130681631 in words is "one hundred thirty million, six hundred eighty-one thousand, six hundred thirty-one".