331912242 has 32 divisors (see below), whose sum is σ = 746698560. Its totient is φ = 110635956.

The previous prime is 331912219. The next prime is 331912289. The reversal of 331912242 is 242219133.

It is a happy number.

331912242 is a `hidden beast` number, since 331 + 91 + 2 + 242 = 666.

It is a super-2 number, since 2×331912242² = 220331472778933128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33568 + ... + 42315.

It is an arithmetic number, because the mean of its divisors is an integer number (23334330).

Almost surely, 2^331912242 is an apocalyptic number.

331912242 is an abundant number, since it is smaller than the sum of its proper divisors (414786318).

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

331912242 is an frugal number, since it uses more digits than its factorization.

331912242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75906 (or 75888 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 331912242 is about 18218.4588261466. The cubic root of 331912242 is about 692.3745410834.

The spelling of 331912242 in words is "three hundred thirty-one million, nine hundred twelve thousand, two hundred forty-two".