331563965 has 16 divisors (see below), whose sum is σ = 424725120. Its totient is φ = 247746240.

The previous prime is 331563959. The next prime is 331563979. The reversal of 331563965 is 569365133.

It is not a de Polignac number, because 331563965 - 2¹² = 331559869 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 17834 + ... + 31323.

It is an arithmetic number, because the mean of its divisors is an integer number (26545320).

Almost surely, 2^331563965 is an apocalyptic number.

It is an amenable number.

331563965 is a deficient number, since it is larger than the sum of its proper divisors (93161155).

331563965 is a wasteful number, since it uses less digits than its factorization.

331563965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49252.

The product of its digits is 218700, while the sum is 41.

The square root of 331563965 is about 18208.8979622601. The cubic root of 331563965 is about 692.1322857629.

The spelling of 331563965 in words is "three hundred thirty-one million, five hundred sixty-three thousand, nine hundred sixty-five".