331438942 has 4 divisors (see below), whose sum is σ = 497158416. Its totient is φ = 165719470.

The previous prime is 331438927. The next prime is 331438973. The reversal of 331438942 is 249834133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 249834133 = 10459 ⋅23887.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82859734 + ... + 82859737.

It is an arithmetic number, because the mean of its divisors is an integer number (124289604).

Almost surely, 2^331438942 is an apocalyptic number.

331438942 is a deficient number, since it is larger than the sum of its proper divisors (165719474).

331438942 is a wasteful number, since it uses less digits than its factorization.

331438942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165719473.

The product of its digits is 62208, while the sum is 37.

The square root of 331438942 is about 18205.4646191741. The cubic root of 331438942 is about 692.0452805970.

The spelling of 331438942 in words is "three hundred thirty-one million, four hundred thirty-eight thousand, nine hundred forty-two".