31301223013 has 4 divisors (see below), whose sum is σ = 31312008288. Its totient is φ = 31290437740.

The previous prime is 31301222971. The next prime is 31301223047. The reversal of 31301223013 is 31032210313.

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 31301223013 - 2²¹ = 31299125861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31301223053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5388283 + ... + 5394088.

It is an arithmetic number, because the mean of its divisors is an integer number (7828002072).

Almost surely, 2^31301223013 is an apocalyptic number.

It is an amenable number.

31301223013 is a deficient number, since it is larger than the sum of its proper divisors (10785275).

31301223013 is a wasteful number, since it uses less digits than its factorization.

31301223013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10785274.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31301223013 its reverse (31032210313), we get a palindrome (62333433326).

The spelling of 31301223013 in words is "thirty-one billion, three hundred one million, two hundred twenty-three thousand, thirteen".