331320010031 has 4 divisors (see below), whose sum is σ = 334252045632. Its totient is φ = 328387974432.

The previous prime is 331320010019. The next prime is 331320010249. The reversal of 331320010031 is 130010023133.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331320010031 is a prime.

It is a super-2 number, since 2×331320010031² (a number of 24 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 = 331320009991 and 331320010009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331320010331) 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, 1466017631 + ... + 1466017856.

It is an arithmetic number, because the mean of its divisors is an integer number (83563011408).

Almost surely, 2^331320010031 is an apocalyptic number.

331320010031 is a deficient number, since it is larger than the sum of its proper divisors (2932035601).

331320010031 is a wasteful number, since it uses less digits than its factorization.

331320010031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2932035600.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 331320010031 its reverse (130010023133), we get a palindrome (461330033164).

The spelling of 331320010031 in words is "three hundred thirty-one billion, three hundred twenty million, ten thousand, thirty-one".