1331120939 has 2 divisors, whose sum is σ = 1331120940. Its totient is φ = 1331120938.

The previous prime is 1331120881. The next prime is 1331120941. The reversal of 1331120939 is 9390211331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1331120939 - 2⁸ = 1331120683 is a prime.

Together with 1331120941, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1331120839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665560469 + 665560470.

It is an arithmetic number, because the mean of its divisors is an integer number (665560470).

Almost surely, 2^1331120939 is an apocalyptic number.

1331120939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331120939 is an equidigital number, since it uses as much as digits as its factorization.

1331120939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 1331120939 is about 36484.5301326466. The cubic root of 1331120939 is about 1100.0333155199.

The spelling of 1331120939 in words is "one billion, three hundred thirty-one million, one hundred twenty thousand, nine hundred thirty-nine".