331628545 has 8 divisors (see below), whose sum is σ = 410791680. Its totient is φ = 256744560.

The previous prime is 331628533. The next prime is 331628573. The reversal of 331628545 is 545826133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-331628545 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1069615 + ... + 1069924.

It is an arithmetic number, because the mean of its divisors is an integer number (51348960).

Almost surely, 2^331628545 is an apocalyptic number.

It is an amenable number.

331628545 is a deficient number, since it is larger than the sum of its proper divisors (79163135).

331628545 is a wasteful number, since it uses less digits than its factorization.

331628545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139575.

The product of its digits is 86400, while the sum is 37.

The square root of 331628545 is about 18210.6711847752. The cubic root of 331628545 is about 692.1772192760.

The spelling of 331628545 in words is "three hundred thirty-one million, six hundred twenty-eight thousand, five hundred forty-five".