331886889 has 40 divisors (see below), whose sum is σ = 524172000. Its totient is φ = 208692288.

The previous prime is 331886887. The next prime is 331886897. The reversal of 331886889 is 988688133.

It is a happy number.

It is not a de Polignac number, because 331886889 - 2¹ = 331886887 is a prime.

It is a super-2 number, since 2×331886889² = 220297814180196642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331886887) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 582997 + ... + 583565.

It is an arithmetic number, because the mean of its divisors is an integer number (13104300).

Almost surely, 2^331886889 is an apocalyptic number.

It is an amenable number.

331886889 is a deficient number, since it is larger than the sum of its proper divisors (192285111).

331886889 is a wasteful number, since it uses less digits than its factorization.

331886889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979 (or 970 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 331886889 is about 18217.7630075704. The cubic root of 331886889 is about 692.3569117058.

The spelling of 331886889 in words is "three hundred thirty-one million, eight hundred eighty-six thousand, eight hundred eighty-nine".