31122403013 has 16 divisors (see below), whose sum is σ = 35915576256. Its totient is φ = 26712687360.

The previous prime is 31122403007. The next prime is 31122403021. The reversal of 31122403013 is 31030422113.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31122403013 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 (31122403043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 830003 + ... + 866688.

It is an arithmetic number, because the mean of its divisors is an integer number (2244723516).

Almost surely, 2^31122403013 is an apocalyptic number.

It is an amenable number.

31122403013 is a deficient number, since it is larger than the sum of its proper divisors (4793173243).

31122403013 is a wasteful number, since it uses less digits than its factorization.

31122403013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696804.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31122403013 its reverse (31030422113), we get a palindrome (62152825126).

The spelling of 31122403013 in words is "thirty-one billion, one hundred twenty-two million, four hundred three thousand, thirteen".