31303322013 has 16 divisors (see below), whose sum is σ = 43181553600. Its totient is φ = 20147137920.

The previous prime is 31303322009. The next prime is 31303322021. The reversal of 31303322013 is 31022330313.

It is not a de Polignac number, because 31303322013 - 2² = 31303322009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31303322033) 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, 1563798 + ... + 1583688.

It is an arithmetic number, because the mean of its divisors is an integer number (2698847100).

Almost surely, 2^31303322013 is an apocalyptic number.

It is an amenable number.

31303322013 is a deficient number, since it is larger than the sum of its proper divisors (11878231587).

31303322013 is a wasteful number, since it uses less digits than its factorization.

31303322013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38012.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 31303322013 its reverse (31022330313), we get a palindrome (62325652326).

The spelling of 31303322013 in words is "thirty-one billion, three hundred three million, three hundred twenty-two thousand, thirteen".