122813731 has 2 divisors, whose sum is σ = 122813732. Its totient is φ = 122813730.

The previous prime is 122813683. The next prime is 122813759. The reversal of 122813731 is 137318221.

It is an a-pointer prime, because the next prime (122813759) can be obtained adding 122813731 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122813731 - 2²¹ = 120716579 is a prime.

It is a super-2 number, since 2×122813731² = 30166425044280722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122813731.

It is not a weakly prime, because it can be changed into another prime (122813791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61406865 + 61406866.

It is an arithmetic number, because the mean of its divisors is an integer number (61406866).

Almost surely, 2^122813731 is an apocalyptic number.

122813731 is a deficient number, since it is larger than the sum of its proper divisors (1).

122813731 is an equidigital number, since it uses as much as digits as its factorization.

122813731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 28.

The square root of 122813731 is about 11082.1356696261. The cubic root of 122813731 is about 497.0678128371.

The spelling of 122813731 in words is "one hundred twenty-two million, eight hundred thirteen thousand, seven hundred thirty-one".