331887426 has 64 divisors (see below), whose sum is σ = 763499520. Its totient is φ = 95397120.

The previous prime is 331887407. The next prime is 331887433. The reversal of 331887426 is 624788133.

It is a super-2 number, since 2×331887426² = 220298527073810952, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67756 + ... + 72488.

It is an arithmetic number, because the mean of its divisors is an integer number (11929680).

Almost surely, 2^331887426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331887426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381749760).

331887426 is an abundant number, since it is smaller than the sum of its proper divisors (431612094).

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

331887426 is a wasteful number, since it uses less digits than its factorization.

331887426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4811.

The product of its digits is 193536, while the sum is 42.

The square root of 331887426 is about 18217.7777459272. Note that the first 4 decimals coincide. The cubic root of 331887426 is about 692.3572851216.

The spelling of 331887426 in words is "three hundred thirty-one million, eight hundred eighty-seven thousand, four hundred twenty-six".