120644731 has 2 divisors, whose sum is σ = 120644732. Its totient is φ = 120644730.

The previous prime is 120644717. The next prime is 120644773. The reversal of 120644731 is 137446021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120644731 - 2²⁵ = 87090299 is a prime.

It is a super-2 number, since 2×120644731² = 29110302236124722, 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 120644731.

It is not a weakly prime, because it can be changed into another prime (120644701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60322365 + 60322366.

It is an arithmetic number, because the mean of its divisors is an integer number (60322366).

Almost surely, 2^120644731 is an apocalyptic number.

120644731 is a deficient number, since it is larger than the sum of its proper divisors (1).

120644731 is an equidigital number, since it uses as much as digits as its factorization.

120644731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 120644731 is about 10983.8395381579. The cubic root of 120644731 is about 494.1241949810.

The spelling of 120644731 in words is "one hundred twenty million, six hundred forty-four thousand, seven hundred thirty-one".