331913240 has 16 divisors (see below), whose sum is σ = 746804880. Its totient is φ = 132765280.

The previous prime is 331913233. The next prime is 331913297. The reversal of 331913240 is 42319133.

It is a happy number.

It is a super-2 number, since 2×331913240² = 220332797774595200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4148876 + ... + 4148955.

It is an arithmetic number, because the mean of its divisors is an integer number (46675305).

Almost surely, 2^331913240 is an apocalyptic number.

It is an amenable number.

331913240 is an abundant number, since it is smaller than the sum of its proper divisors (414891640).

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

331913240 is a wasteful number, since it uses less digits than its factorization.

331913240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8297842 (or 8297838 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 331913240 is about 18218.4862159291. The cubic root of 331913240 is about 692.3752350310.

The spelling of 331913240 in words is "three hundred thirty-one million, nine hundred thirteen thousand, two hundred forty".