122387617631 has 2 divisors, whose sum is σ = 122387617632. Its totient is φ = 122387617630.

The previous prime is 122387617601. The next prime is 122387617663. The reversal of 122387617631 is 136716783221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122387617631 - 2⁶ = 122387617567 is a prime.

It is a super-2 number, since 2×122387617631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122387617601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61193808815 + 61193808816.

It is an arithmetic number, because the mean of its divisors is an integer number (61193808816).

Almost surely, 2^122387617631 is an apocalyptic number.

122387617631 is a deficient number, since it is larger than the sum of its proper divisors (1).

122387617631 is an equidigital number, since it uses as much as digits as its factorization.

122387617631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 47.

The spelling of 122387617631 in words is "one hundred twenty-two billion, three hundred eighty-seven million, six hundred seventeen thousand, six hundred thirty-one".