31300320002113 has 4 divisors (see below), whose sum is σ = 31303237369540. Its totient is φ = 31297402634688.

The previous prime is 31300320002099. The next prime is 31300320002117. The reversal of 31300320002113 is 31120002300313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9123680014849 + 22176639987264 = 3020543^2 + 4709208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31300320002113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31300320002117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1458667620 + ... + 1458689077.

It is an arithmetic number, because the mean of its divisors is an integer number (7825809342385).

Almost surely, 2^{31300320002113} is an apocalyptic number.

It is an amenable number.

31300320002113 is a deficient number, since it is larger than the sum of its proper divisors (2917367427).

31300320002113 is a wasteful number, since it uses less digits than its factorization.

31300320002113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2917367426.

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

Adding to 31300320002113 its reverse (31120002300313), we get a palindrome (62420322302426).

The spelling of 31300320002113 in words is "thirty-one trillion, three hundred billion, three hundred twenty million, two thousand, one hundred thirteen".