120790731 has 4 divisors (see below), whose sum is σ = 161054312. Its totient is φ = 80527152.

The previous prime is 120790727. The next prime is 120790739. The reversal of 120790731 is 137097021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137097021 = 3 ⋅45699007.

It is not a de Polignac number, because 120790731 - 2² = 120790727 is a prime.

It is a super-2 number, since 2×120790731² = 29180801391028722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120790739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20131786 + ... + 20131791.

It is an arithmetic number, because the mean of its divisors is an integer number (40263578).

Almost surely, 2^120790731 is an apocalyptic number.

120790731 is a deficient number, since it is larger than the sum of its proper divisors (40263581).

120790731 is an equidigital number, since it uses as much as digits as its factorization.

120790731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40263580.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 120790731 is about 10990.4836563274. The cubic root of 120790731 is about 494.3234385234.

The spelling of 120790731 in words is "one hundred twenty million, seven hundred ninety thousand, seven hundred thirty-one".