130431335661 has 12 divisors (see below), whose sum is σ = 205528165440. Its totient is φ = 79049294280.

The previous prime is 130431335633. The next prime is 130431335669. The reversal of 130431335661 is 166533134031.

130431335661 is a `hidden beast` number, since 1 + 30 + 4 + 31 + 33 + 566 + 1 = 666.

It is not a de Polignac number, because 130431335661 - 2⁷ = 130431335533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130431335669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 658744021 + ... + 658744218.

It is an arithmetic number, because the mean of its divisors is an integer number (17127347120).

Almost surely, 2^130431335661 is an apocalyptic number.

130431335661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

130431335661 is a deficient number, since it is larger than the sum of its proper divisors (75096829779).

130431335661 is a wasteful number, since it uses less digits than its factorization.

130431335661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317488256 (or 1317488253 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

Adding to 130431335661 its reverse (166533134031), we get a palindrome (296964469692).

The spelling of 130431335661 in words is "one hundred thirty billion, four hundred thirty-one million, three hundred thirty-five thousand, six hundred sixty-one".