331645104 has 200 divisors, whose sum is σ = 1109095680. Its totient is φ = 93716352.

The previous prime is 331645103. The next prime is 331645121. The reversal of 331645104 is 401546133.

331645104 is a `hidden beast` number, since 3 + 3 + 1 + 645 + 10 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (331645103) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1260877 + ... + 1261139.

Almost surely, 2^331645104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331645104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (554547840).

331645104 is an abundant number, since it is smaller than the sum of its proper divisors (777450576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331645104 is a wasteful number, since it uses less digits than its factorization.

331645104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 331645104 is about 18211.1258301073. The cubic root of 331645104 is about 692.1887397678.

The spelling of 331645104 in words is "three hundred thirty-one million, six hundred forty-five thousand, one hundred four".