331888893 has 32 divisors (see below), whose sum is σ = 512827392. Its totient is φ = 187012800.

The previous prime is 331888849. The next prime is 331888897. The reversal of 331888893 is 398888133.

It is a happy number.

It is not a de Polignac number, because 331888893 - 2¹⁰ = 331887869 is a prime.

It is a super-2 number, since 2×331888893² = 220300474593530898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331888897) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 613203 + ... + 613743.

It is an arithmetic number, because the mean of its divisors is an integer number (16025856).

Almost surely, 2^331888893 is an apocalyptic number.

It is an amenable number.

331888893 is a deficient number, since it is larger than the sum of its proper divisors (180938499).

331888893 is a wasteful number, since it uses less digits than its factorization.

331888893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905.

The product of its digits is 995328, while the sum is 51.

The square root of 331888893 is about 18217.8180087518. The cubic root of 331888893 is about 692.3583052332.

The spelling of 331888893 in words is "three hundred thirty-one million, eight hundred eighty-eight thousand, eight hundred ninety-three".