331392940 has 12 divisors (see below), whose sum is σ = 695925216. Its totient is φ = 132557168.

The previous prime is 331392923. The next prime is 331392949. The reversal of 331392940 is 49293133.

It is a junction number, because it is equal to n+sod(n) for n = 331392896 and 331392905.

It is not an unprimeable number, because it can be changed into a prime (331392949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8284804 + ... + 8284843.

It is an arithmetic number, because the mean of its divisors is an integer number (57993768).

Almost surely, 2^331392940 is an apocalyptic number.

It is an amenable number.

331392940 is an abundant number, since it is smaller than the sum of its proper divisors (364532276).

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

331392940 is a wasteful number, since it uses less digits than its factorization.

331392940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16569656 (or 16569654 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 331392940 is about 18204.2011634677. The cubic root of 331392940 is about 692.0132616880.

The spelling of 331392940 in words is "three hundred thirty-one million, three hundred ninety-two thousand, nine hundred forty".