331897039 has 2 divisors, whose sum is σ = 331897040. Its totient is φ = 331897038.

The previous prime is 331897031. The next prime is 331897057. The reversal of 331897039 is 930798133.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 331897039 - 2³ = 331897031 is a prime.

It is a super-2 number, since 2×331897039² = 220311288993935042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331896986 and 331897004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331897031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165948519 + 165948520.

It is an arithmetic number, because the mean of its divisors is an integer number (165948520).

Almost surely, 2^331897039 is an apocalyptic number.

331897039 is a deficient number, since it is larger than the sum of its proper divisors (1).

331897039 is an equidigital number, since it uses as much as digits as its factorization.

331897039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 331897039 is about 18218.0415797088. The cubic root of 331897039 is about 692.3639696837.

The spelling of 331897039 in words is "three hundred thirty-one million, eight hundred ninety-seven thousand, thirty-nine".