100656220631 has 2 divisors, whose sum is σ = 100656220632. Its totient is φ = 100656220630.

The previous prime is 100656220603. The next prime is 100656220633. The reversal of 100656220631 is 136022656001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100656220631 is a prime.

It is a super-2 number, since 2×100656220631² (a number of 23 digits) contains 22 as substring.

Together with 100656220633, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100656220633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50328110315 + 50328110316.

It is an arithmetic number, because the mean of its divisors is an integer number (50328110316).

Almost surely, 2^100656220631 is an apocalyptic number.

100656220631 is a deficient number, since it is larger than the sum of its proper divisors (1).

100656220631 is an equidigital number, since it uses as much as digits as its factorization.

100656220631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 100656220631 its reverse (136022656001), we get a palindrome (236678876632).

The spelling of 100656220631 in words is "one hundred billion, six hundred fifty-six million, two hundred twenty thousand, six hundred thirty-one".