331866942 has 24 divisors (see below), whose sum is σ = 729560328. Its totient is φ = 100565520.

The previous prime is 331866883. The next prime is 331866943. The reversal of 331866942 is 249668133.

331866942 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×331866942² = 220271334384862728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331866894 and 331866903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331866943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 227833 + ... + 229284.

It is an arithmetic number, because the mean of its divisors is an integer number (30398347).

Almost surely, 2^331866942 is an apocalyptic number.

331866942 is an abundant number, since it is smaller than the sum of its proper divisors (397693386).

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

331866942 is a wasteful number, since it uses less digits than its factorization.

331866942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457144 (or 457133 counting only the distinct ones).

The product of its digits is 186624, while the sum is 42.

The square root of 331866942 is about 18217.2155391542. The cubic root of 331866942 is about 692.3430407953.

The spelling of 331866942 in words is "three hundred thirty-one million, eight hundred sixty-six thousand, nine hundred forty-two".