331994902 has 4 divisors (see below), whose sum is σ = 497992356. Its totient is φ = 165997450.

The previous prime is 331994881. The next prime is 331994909. The reversal of 331994902 is 209499133.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×331994902² = 220441229907979208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331994909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82998724 + ... + 82998727.

It is an arithmetic number, because the mean of its divisors is an integer number (124498089).

Almost surely, 2^331994902 is an apocalyptic number.

331994902 is a deficient number, since it is larger than the sum of its proper divisors (165997454).

331994902 is a wasteful number, since it uses less digits than its factorization.

331994902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165997453.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 331994902 is about 18220.7272632022. The cubic root of 331994902 is about 692.4320130312.

The spelling of 331994902 in words is "three hundred thirty-one million, nine hundred ninety-four thousand, nine hundred two".