331913838 has 32 divisors (see below), whose sum is σ = 686407680. Its totient is φ = 106886880.

The previous prime is 331913833. The next prime is 331913843. The reversal of 331913838 is 838319133.

It is an interprime number because it is at equal distance from previous prime (331913833) and next prime (331913843).

It is a super-2 number, since 2×331913838² = 220333591711780488, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331913796 and 331913805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331913833) 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, 147123 + ... + 149361.

It is an arithmetic number, because the mean of its divisors is an integer number (21450240).

Almost surely, 2^331913838 is an apocalyptic number.

331913838 is an abundant number, since it is smaller than the sum of its proper divisors (354493842).

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

331913838 is a wasteful number, since it uses less digits than its factorization.

331913838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3072.

The product of its digits is 46656, while the sum is 39.

The square root of 331913838 is about 18218.5026278232. The cubic root of 331913838 is about 692.3756508426.

It can be divided in two parts, 3319138 and 38, that added together give a triangular number (3319176 = T₂₅₇₆).

The spelling of 331913838 in words is "three hundred thirty-one million, nine hundred thirteen thousand, eight hundred thirty-eight".