331969990 has 32 divisors (see below), whose sum is σ = 662929920. Its totient is φ = 118668000.

The previous prime is 331969973. The next prime is 331969997. The reversal of 331969990 is 99969133.

It is a happy number.

It is a super-3 number, since 3×331969990³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331969997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19086 + ... + 32065.

It is an arithmetic number, because the mean of its divisors is an integer number (20716560).

Almost surely, 2^331969990 is an apocalyptic number.

331969990 is a deficient number, since it is larger than the sum of its proper divisors (330959930).

331969990 is a wasteful number, since it uses less digits than its factorization.

331969990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51228.

The product of its (nonzero) digits is 354294, while the sum is 49.

The square root of 331969990 is about 18220.0436333177. The cubic root of 331969990 is about 692.4146931892.

The spelling of 331969990 in words is "three hundred thirty-one million, nine hundred sixty-nine thousand, nine hundred ninety".