31213302013 has 16 divisors (see below), whose sum is σ = 33259584960. Its totient is φ = 29190973696.

The previous prime is 31213302007. The next prime is 31213302053. The reversal of 31213302013 is 31020331213.

It is a cyclic number.

It is not a de Polignac number, because 31213302013 - 2⁵ = 31213301981 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 (31213302053) 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, 1719378 + ... + 1737436.

It is an arithmetic number, because the mean of its divisors is an integer number (2078724060).

Almost surely, 2^31213302013 is an apocalyptic number.

It is an amenable number.

31213302013 is a deficient number, since it is larger than the sum of its proper divisors (2046282947).

31213302013 is a wasteful number, since it uses less digits than its factorization.

31213302013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18716.

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

Adding to 31213302013 its reverse (31020331213), we get a palindrome (62233633226).

The spelling of 31213302013 in words is "thirty-one billion, two hundred thirteen million, three hundred two thousand, thirteen".