120431321 has 2 divisors, whose sum is σ = 120431322. Its totient is φ = 120431320.

The previous prime is 120431303. The next prime is 120431327. The reversal of 120431321 is 123134021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104142025 + 16289296 = 10205^2 + 4036^2 .

It is an emirp because it is prime and its reverse (123134021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120431321 - 2²⁶ = 53322457 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120431321.

It is not a weakly prime, because it can be changed into another prime (120431327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60215660 + 60215661.

It is an arithmetic number, because the mean of its divisors is an integer number (60215661).

Almost surely, 2^120431321 is an apocalyptic number.

It is an amenable number.

120431321 is a deficient number, since it is larger than the sum of its proper divisors (1).

120431321 is an equidigital number, since it uses as much as digits as its factorization.

120431321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 120431321 is about 10974.1205114579. The cubic root of 120431321 is about 493.8326688263.

Adding to 120431321 its reverse (123134021), we get a palindrome (243565342).

The spelling of 120431321 in words is "one hundred twenty million, four hundred thirty-one thousand, three hundred twenty-one".