120331993 has 2 divisors, whose sum is σ = 120331994. Its totient is φ = 120331992.

The previous prime is 120331973. The next prime is 120332033. The reversal of 120331993 is 399133021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120297024 + 34969 = 10968^2 + 187^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120331993 is a prime.

It is not a weakly prime, because it can be changed into another prime (120331903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60165996 + 60165997.

It is an arithmetic number, because the mean of its divisors is an integer number (60165997).

Almost surely, 2^120331993 is an apocalyptic number.

It is an amenable number.

120331993 is a deficient number, since it is larger than the sum of its proper divisors (1).

120331993 is an equidigital number, since it uses as much as digits as its factorization.

120331993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 120331993 is about 10969.5940216582. The cubic root of 120331993 is about 493.6968655528.

The spelling of 120331993 in words is "one hundred twenty million, three hundred thirty-one thousand, nine hundred ninety-three".