331990233 has 16 divisors (see below), whose sum is σ = 455295936. Its totient is φ = 215023680.

The previous prime is 331990223. The next prime is 331990237. The reversal of 331990233 is 332099133.

It is a happy number.

It is not a de Polignac number, because 331990233 - 2¹⁴ = 331973849 is a prime.

It is a super-2 number, since 2×331990233² = 220435029614788578, 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 = 331990194 and 331990203.

It is not an unprimeable number, because it can be changed into a prime (331990237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89310 + ... + 92952.

It is an arithmetic number, because the mean of its divisors is an integer number (28455996).

Almost surely, 2^331990233 is an apocalyptic number.

It is an amenable number.

331990233 is a deficient number, since it is larger than the sum of its proper divisors (123305703).

331990233 is a wasteful number, since it uses less digits than its factorization.

331990233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4504.

The product of its (nonzero) digits is 13122, while the sum is 33.

The square root of 331990233 is about 18220.5991394356. The cubic root of 331990233 is about 692.4287670173.

Subtracting 331990233 from its reverse (332099133), we obtain a square (108900 = 330²).

It can be divided in two parts, 33199023 and 3, that added together give a triangular number (33199026 = T₈₁₄₈).

The spelling of 331990233 in words is "three hundred thirty-one million, nine hundred ninety thousand, two hundred thirty-three".