331909942 has 16 divisors (see below), whose sum is σ = 612757152. Its totient is φ = 131304960.

The previous prime is 331909933. The next prime is 331909969. The reversal of 331909942 is 249909133.

It is a super-2 number, since 2×331909942² = 220328419196886728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331909895 and 331909904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 911659 + ... + 912022.

It is an arithmetic number, because the mean of its divisors is an integer number (38297322).

Almost surely, 2^331909942 is an apocalyptic number.

331909942 is a deficient number, since it is larger than the sum of its proper divisors (280847210).

331909942 is a wasteful number, since it uses less digits than its factorization.

331909942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823703.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 331909942 is about 18218.3957032446. The cubic root of 331909942 is about 692.3729418001.

The spelling of 331909942 in words is "three hundred thirty-one million, nine hundred nine thousand, nine hundred forty-two".