31320102013 has 8 divisors (see below), whose sum is σ = 31924064088. Its totient is φ = 30716622144.

The previous prime is 31320101947. The next prime is 31320102019. The reversal of 31320102013 is 31020102313.

It can be written as a sum of positive squares in 4 ways, for example, as 1836808164 + 29483293849 = 42858^2 + 171707^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31320102013 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 (31320102019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11995 + ... + 250567.

It is an arithmetic number, because the mean of its divisors is an integer number (3990508011).

Almost surely, 2^31320102013 is an apocalyptic number.

It is an amenable number.

31320102013 is a deficient number, since it is larger than the sum of its proper divisors (603962075).

31320102013 is a wasteful number, since it uses less digits than its factorization.

31320102013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241103.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31320102013 its reverse (31020102313), we get a palindrome (62340204326).

The spelling of 31320102013 in words is "thirty-one billion, three hundred twenty million, one hundred two thousand, thirteen".