331878434 has 16 divisors (see below), whose sum is σ = 525549600. Its totient is φ = 156746304.

The previous prime is 331878433. The next prime is 331878439. The reversal of 331878434 is 434878133.

It is a super-2 number, since 2×331878434² = 220286589908584712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331878391 and 331878400.

It is not an unprimeable number, because it can be changed into a prime (331878433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 602 + ... + 25770.

It is an arithmetic number, because the mean of its divisors is an integer number (32846850).

Almost surely, 2^331878434 is an apocalyptic number.

331878434 is a deficient number, since it is larger than the sum of its proper divisors (193671166).

331878434 is a wasteful number, since it uses less digits than its factorization.

331878434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25537.

The product of its digits is 193536, while the sum is 41.

The square root of 331878434 is about 18217.5309523547. The cubic root of 331878434 is about 692.3510322656.

The spelling of 331878434 in words is "three hundred thirty-one million, eight hundred seventy-eight thousand, four hundred thirty-four".