120823931 has 2 divisors, whose sum is σ = 120823932. Its totient is φ = 120823930.

The previous prime is 120823919. The next prime is 120823939. The reversal of 120823931 is 139328021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120823931 - 2⁶ = 120823867 is a prime.

It is a super-2 number, since 2×120823931² = 29196844604585522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 120823894 and 120823903.

It is not a weakly prime, because it can be changed into another prime (120823939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60411965 + 60411966.

It is an arithmetic number, because the mean of its divisors is an integer number (60411966).

Almost surely, 2^120823931 is an apocalyptic number.

120823931 is a deficient number, since it is larger than the sum of its proper divisors (1).

120823931 is an equidigital number, since it uses as much as digits as its factorization.

120823931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 120823931 is about 10991.9939501439. The cubic root of 120823931 is about 494.3687235510.

The spelling of 120823931 in words is "one hundred twenty million, eight hundred twenty-three thousand, nine hundred thirty-one".