331220311113101 has 4 divisors (see below), whose sum is σ = 331220568369600. Its totient is φ = 331220053856604.

The previous prime is 331220311113031. The next prime is 331220311113103. The reversal of 331220311113101 is 101311113022133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 331220311113101 - 2³⁰ = 331219237371277 is a prime.

It is a super-2 number, since 2×331220311113101² (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 (331220311113103) 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, 126687221 + ... + 129275258.

It is an arithmetic number, because the mean of its divisors is an integer number (82805142092400).

Almost surely, 2^{331220311113101} is an apocalyptic number.

It is an amenable number.

331220311113101 is a deficient number, since it is larger than the sum of its proper divisors (257256499).

331220311113101 is a wasteful number, since it uses less digits than its factorization.

331220311113101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257256498.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 331220311113101 its reverse (101311113022133), we get a palindrome (432531424135234).

The spelling of 331220311113101 in words is "three hundred thirty-one trillion, two hundred twenty billion, three hundred eleven million, one hundred thirteen thousand, one hundred one".