331342969 has 2 divisors, whose sum is σ = 331342970. Its totient is φ = 331342968.

The previous prime is 331342961. The next prime is 331343021. The reversal of 331342969 is 969243133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 319694400 + 11648569 = 17880^2 + 3413^2 .

It is a cyclic number.

It is not a de Polignac number, because 331342969 - 2³ = 331342961 is a prime.

It is a super-2 number, since 2×331342969² = 219576326211469922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (331342961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165671484 + 165671485.

It is an arithmetic number, because the mean of its divisors is an integer number (165671485).

Almost surely, 2^331342969 is an apocalyptic number.

It is an amenable number.

331342969 is a deficient number, since it is larger than the sum of its proper divisors (1).

331342969 is an equidigital number, since it uses as much as digits as its factorization.

331342969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 40.

The square root of 331342969 is about 18202.8285988744. The cubic root of 331342969 is about 691.9784768663.

The spelling of 331342969 in words is "three hundred thirty-one million, three hundred forty-two thousand, nine hundred sixty-nine".