331868133 has 12 divisors (see below), whose sum is σ = 492321388. Its totient is φ = 215265600.

The previous prime is 331868093. The next prime is 331868161.

331868133 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 132296004 + 199572129 = 11502^2 + 14127^2 .

It is not a de Polignac number, because 331868133 - 2¹² = 331864037 is a prime.

It is a super-2 number, since 2×331868133² = 220272915401811378, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331868233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 497968 + ... + 498633.

Almost surely, 2^331868133 is an apocalyptic number.

It is an amenable number.

331868133 is a deficient number, since it is larger than the sum of its proper divisors (160453255).

331868133 is a wasteful number, since it uses less digits than its factorization.

331868133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996644 (or 996641 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 331868133 is about 18217.2482279844. The cubic root of 331868133 is about 692.3438690184.

It can be divided in two parts, 3 and 31868133, that added together give a triangular number (31868136 = T₇₉₈₃).

The spelling of 331868133 in words is "three hundred thirty-one million, eight hundred sixty-eight thousand, one hundred thirty-three".