331121223113231 has 4 divisors (see below), whose sum is σ = 331131809876712. Its totient is φ = 331110636349752.

The previous prime is 331121223113143. The next prime is 331121223113251. The reversal of 331121223113231 is 132311322121133.

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

It is a cyclic number.

It is not a de Polignac number, because 331121223113231 - 2¹⁴ = 331121223096847 is a prime.

It is a super-2 number, since 2×331121223113231² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331121223113194 and 331121223113203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331121223113251) 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, 5293334825 + ... + 5293397378.

It is an arithmetic number, because the mean of its divisors is an integer number (82782952469178).

Almost surely, 2^{331121223113231} is an apocalyptic number.

331121223113231 is a deficient number, since it is larger than the sum of its proper divisors (10586763481).

331121223113231 is a wasteful number, since it uses less digits than its factorization.

331121223113231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10586763480.

The product of its digits is 3888, while the sum is 29.

Adding to 331121223113231 its reverse (132311322121133), we get a palindrome (463432545234364).

The spelling of 331121223113231 in words is "three hundred thirty-one trillion, one hundred twenty-one billion, two hundred twenty-three million, one hundred thirteen thousand, two hundred thirty-one".