331213332 has 24 divisors (see below), whose sum is σ = 775628896. Its totient is φ = 110004768.

The previous prime is 331213327. The next prime is 331213343. The reversal of 331213332 is 233312133.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 331213299 and 331213308.

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, 46498 + ... + 53145.

Almost surely, 2^331213332 is an apocalyptic number.

It is an amenable number.

331213332 is an abundant number, since it is smaller than the sum of its proper divisors (444415564).

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

331213332 is a wasteful number, since it uses less digits than its factorization.

331213332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99927 (or 99925 counting only the distinct ones).

The product of its digits is 972, while the sum is 21.

The square root of 331213332 is about 18199.2673478907. The cubic root of 331213332 is about 691.8882202200. Note that the first 3 decimals are identical.

Adding to 331213332 its reverse (233312133), we get a palindrome (564525465).

The spelling of 331213332 in words is "three hundred thirty-one million, two hundred thirteen thousand, three hundred thirty-two".