31303300013 has 12 divisors (see below), whose sum is σ = 33816614880. Its totient is φ = 28962558912.

The previous prime is 31303299997. The next prime is 31303300079. The reversal of 31303300013 is 31000330313.

It is not a de Polignac number, because 31303300013 - 2⁴ = 31303299997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 31303299964 and 31303300000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31303300213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 900881 + ... + 934982.

It is an arithmetic number, because the mean of its divisors is an integer number (2818051240).

Almost surely, 2^31303300013 is an apocalyptic number.

It is an amenable number.

31303300013 is a deficient number, since it is larger than the sum of its proper divisors (2513314867).

31303300013 is a wasteful number, since it uses less digits than its factorization.

31303300013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835956 (or 1835939 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 17.

Adding to 31303300013 its reverse (31000330313), we get a palindrome (62303630326).

The spelling of 31303300013 in words is "thirty-one billion, three hundred three million, three hundred thousand, thirteen".