331664145 has 16 divisors (see below), whose sum is σ = 531824832. Its totient is φ = 176500160.

The previous prime is 331664119. The next prime is 331664167. The reversal of 331664145 is 541466133.

It is not a de Polignac number, because 331664145 - 2⁸ = 331663889 is a prime.

It is a super-2 number, since 2×331664145² = 220002210157162050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17067 + ... + 30896.

It is an arithmetic number, because the mean of its divisors is an integer number (33239052).

Almost surely, 2^331664145 is an apocalyptic number.

It is an amenable number.

331664145 is a deficient number, since it is larger than the sum of its proper divisors (200160687).

331664145 is a wasteful number, since it uses less digits than its factorization.

331664145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48432.

The product of its digits is 25920, while the sum is 33.

The square root of 331664145 is about 18211.6486074161. The cubic root of 331664145 is about 692.2019865723.

The spelling of 331664145 in words is "three hundred thirty-one million, six hundred sixty-four thousand, one hundred forty-five".