130705631 has 16 divisors (see below), whose sum is σ = 151848000. Its totient is φ = 110197248.

The previous prime is 130705613. The next prime is 130705633. The reversal of 130705631 is 136507031.

It is a happy number.

It is not a de Polignac number, because 130705631 - 2¹⁸ = 130443487 is a prime.

It is a super-2 number, since 2×130705631² = 34167923950216322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130705631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130705633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117305 + ... + 118413.

It is an arithmetic number, because the mean of its divisors is an integer number (9490500).

Almost surely, 2^130705631 is an apocalyptic number.

130705631 is a deficient number, since it is larger than the sum of its proper divisors (21142369).

130705631 is a wasteful number, since it uses less digits than its factorization.

130705631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 130705631 is about 11432.6563405011. The cubic root of 130705631 is about 507.4946084020.

The spelling of 130705631 in words is "one hundred thirty million, seven hundred five thousand, six hundred thirty-one".