122538631 has 2 divisors, whose sum is σ = 122538632. Its totient is φ = 122538630.

The previous prime is 122538623. The next prime is 122538649. The reversal of 122538631 is 136835221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122538631 - 2³ = 122538623 is a prime.

It is a super-2 number, since 2×122538631² = 30031432174708322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122538593 and 122538602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122538131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61269315 + 61269316.

It is an arithmetic number, because the mean of its divisors is an integer number (61269316).

Almost surely, 2^122538631 is an apocalyptic number.

122538631 is a deficient number, since it is larger than the sum of its proper divisors (1).

122538631 is an equidigital number, since it uses as much as digits as its factorization.

122538631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 31.

The square root of 122538631 is about 11069.7168437138. The cubic root of 122538631 is about 496.6963951296.

The spelling of 122538631 in words is "one hundred twenty-two million, five hundred thirty-eight thousand, six hundred thirty-one".