331216654342253 has 4 divisors (see below), whose sum is σ = 331216705796700. Its totient is φ = 331216602887808.

The previous prime is 331216654342207. The next prime is 331216654342289. The reversal of 331216654342253 is 352243456612133.

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 267487758632809 + 63728895709444 = 16355053^2 + 7983038^2 .

It is a cyclic number.

It is not a de Polignac number, because 331216654342253 - 2⁸ = 331216654341997 is a prime.

It is a super-2 number, since 2×331216654342253² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331216654344253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14413028 + ... + 29498621.

It is an arithmetic number, because the mean of its divisors is an integer number (82804176449175).

Almost surely, 2^{331216654342253} is an apocalyptic number.

It is an amenable number.

331216654342253 is a deficient number, since it is larger than the sum of its proper divisors (51454447).

331216654342253 is an equidigital number, since it uses as much as digits as its factorization.

331216654342253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51454446.

The product of its digits is 9331200, while the sum is 50.

The spelling of 331216654342253 in words is "three hundred thirty-one trillion, two hundred sixteen billion, six hundred fifty-four million, three hundred forty-two thousand, two hundred fifty-three".