331912233 has 12 divisors (see below), whose sum is σ = 507630708. Its totient is φ = 208258560.

The previous prime is 331912219. The next prime is 331912289. The reversal of 331912233 is 332219133.

It can be written as a sum of positive squares in 2 ways, for example, as 211615209 + 120297024 = 14547^2 + 10968^2 .

It is not a de Polignac number, because 331912233 - 2⁶ = 331912169 is a prime.

It is a super-2 number, since 2×331912233² = 220331460830092578, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 331912197 and 331912206.

It is not an unprimeable number, because it can be changed into a prime (331910233) 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, 1084528 + ... + 1084833.

It is an arithmetic number, because the mean of its divisors is an integer number (42302559).

Almost surely, 2^331912233 is an apocalyptic number.

It is an amenable number.

331912233 is a deficient number, since it is larger than the sum of its proper divisors (175718475).

331912233 is a wasteful number, since it uses less digits than its factorization.

331912233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169384 (or 2169381 counting only the distinct ones).

The product of its digits is 2916, while the sum is 27.

The square root of 331912233 is about 18218.4585791444. The cubic root of 331912233 is about 692.3745348253.

The spelling of 331912233 in words is "three hundred thirty-one million, nine hundred twelve thousand, two hundred thirty-three".