120505031 has 2 divisors, whose sum is σ = 120505032. Its totient is φ = 120505030.

The previous prime is 120505009. The next prime is 120505043. The reversal of 120505031 is 130505021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120505031 is a prime.

It is a super-2 number, since 2×120505031² = 29042924992621922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120505051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60252515 + 60252516.

It is an arithmetic number, because the mean of its divisors is an integer number (60252516).

Almost surely, 2^120505031 is an apocalyptic number.

120505031 is a deficient number, since it is larger than the sum of its proper divisors (1).

120505031 is an equidigital number, since it uses as much as digits as its factorization.

120505031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 120505031 is about 10977.4783534289. The cubic root of 120505031 is about 493.9333983872.

The spelling of 120505031 in words is "one hundred twenty million, five hundred five thousand, thirty-one".