331230223013 has 4 divisors (see below), whose sum is σ = 331374426540. Its totient is φ = 331086019488.

The previous prime is 331230222977. The next prime is 331230223021. The reversal of 331230223013 is 310322032133.

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 96139063969 + 235091159044 = 310063^2 + 484862^2 .

It is a cyclic number.

It is not a de Polignac number, because 331230223013 - 2¹⁸ = 331229960869 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331230223013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331230226013) 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, 72098318 + ... + 72102911.

It is an arithmetic number, because the mean of its divisors is an integer number (82843606635).

Almost surely, 2^331230223013 is an apocalyptic number.

It is an amenable number.

331230223013 is a deficient number, since it is larger than the sum of its proper divisors (144203527).

331230223013 is a wasteful number, since it uses less digits than its factorization.

331230223013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144203526.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 331230223013 its reverse (310322032133), we get a palindrome (641552255146).

The spelling of 331230223013 in words is "three hundred thirty-one billion, two hundred thirty million, two hundred twenty-three thousand, thirteen".