120318731 has 16 divisors (see below), whose sum is σ = 133152768. Its totient is φ = 108026400.

The previous prime is 120318701. The next prime is 120318739. The reversal of 120318731 is 137813021.

It is a cyclic number.

It is not a de Polignac number, because 120318731 - 2¹⁰ = 120317707 is a prime.

It is a super-2 number, since 2×120318731² = 28953194058900722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120318731.

It is not an unprimeable number, because it can be changed into a prime (120318739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116186 + ... + 117216.

It is an arithmetic number, because the mean of its divisors is an integer number (8322048).

Almost surely, 2^120318731 is an apocalyptic number.

120318731 is a deficient number, since it is larger than the sum of its proper divisors (12834037).

120318731 is a wasteful number, since it uses less digits than its factorization.

120318731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 120318731 is about 10968.9895159035. The cubic root of 120318731 is about 493.6787278207.

The spelling of 120318731 in words is "one hundred twenty million, three hundred eighteen thousand, seven hundred thirty-one".