331663265 has 16 divisors (see below), whose sum is σ = 412340736. Its totient is φ = 255830400.

The previous prime is 331663261. The next prime is 331663307. The reversal of 331663265 is 562366133.

It is not a de Polignac number, because 331663265 - 2² = 331663261 is a prime.

It is a super-2 number, since 2×331663265² = 220001042700920450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331663261) 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, 40085 + ... + 47645.

It is an arithmetic number, because the mean of its divisors is an integer number (25771296).

Almost surely, 2^331663265 is an apocalyptic number.

It is an amenable number.

331663265 is a deficient number, since it is larger than the sum of its proper divisors (80677471).

331663265 is a wasteful number, since it uses less digits than its factorization.

331663265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7880.

The product of its digits is 58320, while the sum is 35.

The square root of 331663265 is about 18211.6244470393. The cubic root of 331663265 is about 692.2013743684.

The spelling of 331663265 in words is "three hundred thirty-one million, six hundred sixty-three thousand, two hundred sixty-five".