331204634630465 has 4 divisors (see below), whose sum is σ = 397445561556564. Its totient is φ = 264963707704368.

The previous prime is 331204634630447. The next prime is 331204634630489. The reversal of 331204634630465 is 564036436402133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 105416956460176 + 225787678170289 = 10267276^2 + 15026233^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331204634630465 is a prime.

It is a super-2 number, since 2×331204634630465² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33120463463042 + ... + 33120463463051.

It is an arithmetic number, because the mean of its divisors is an integer number (99361390389141).

Almost surely, 2^{331204634630465} is an apocalyptic number.

It is an amenable number.

331204634630465 is a deficient number, since it is larger than the sum of its proper divisors (66240926926099).

331204634630465 is an equidigital number, since it uses as much as digits as its factorization.

331204634630465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66240926926098.

The product of its (nonzero) digits is 11197440, while the sum is 50.

The spelling of 331204634630465 in words is "three hundred thirty-one trillion, two hundred four billion, six hundred thirty-four million, six hundred thirty thousand, four hundred sixty-five".