331964863 has 2 divisors, whose sum is σ = 331964864. Its totient is φ = 331964862.

The previous prime is 331964813. The next prime is 331964869. The reversal of 331964863 is 368469133.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 331964863 - 2⁹ = 331964351 is a prime.

It is a super-2 number, since 2×331964863² = 220401340533217538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331964869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165982431 + 165982432.

It is an arithmetic number, because the mean of its divisors is an integer number (165982432).

Almost surely, 2^331964863 is an apocalyptic number.

331964863 is a deficient number, since it is larger than the sum of its proper divisors (1).

331964863 is an equidigital number, since it uses as much as digits as its factorization.

331964863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 43.

The square root of 331964863 is about 18219.9029360752. The cubic root of 331964863 is about 692.4111285814.

The spelling of 331964863 in words is "three hundred thirty-one million, nine hundred sixty-four thousand, eight hundred sixty-three".