331868045 has 6 divisors (see below), whose sum is σ = 398290542. Its totient is φ = 265461848.

The previous prime is 331868021. The next prime is 331868093. The reversal of 331868045 is 540868133.

It can be written as a sum of positive squares in only one way, i.e., 265494436 + 66373609 = 16294^2 + 8147^2 .

It is not a de Polignac number, because 331868045 - 2¹⁰ = 331867021 is a prime.

It is a super-2 number, since 2×331868045² = 220272798584244050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36662 + ... + 44808.

It is an arithmetic number, because the mean of its divisors is an integer number (66381757).

Almost surely, 2^331868045 is an apocalyptic number.

It is an amenable number.

331868045 is a deficient number, since it is larger than the sum of its proper divisors (66422497).

331868045 is an frugal number, since it uses more digits than its factorization.

331868045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16299 (or 8152 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 331868045 is about 18217.2458126908. The cubic root of 331868045 is about 692.3438078231.

The spelling of 331868045 in words is "three hundred thirty-one million, eight hundred sixty-eight thousand, forty-five".