31300220113 has 2 divisors, whose sum is σ = 31300220114. Its totient is φ = 31300220112.

The previous prime is 31300220099. The next prime is 31300220117. The reversal of 31300220113 is 31102200313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30515547969 + 784672144 = 174687^2 + 28012^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31300220113 is a prime.

It is not a weakly prime, because it can be changed into another prime (31300220117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15650110056 + 15650110057.

It is an arithmetic number, because the mean of its divisors is an integer number (15650110057).

Almost surely, 2^31300220113 is an apocalyptic number.

It is an amenable number.

31300220113 is a deficient number, since it is larger than the sum of its proper divisors (1).

31300220113 is an equidigital number, since it uses as much as digits as its factorization.

31300220113 is an evil number, because the sum of its binary digits is even.

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

Adding to 31300220113 its reverse (31102200313), we get a palindrome (62402420426).

The spelling of 31300220113 in words is "thirty-one billion, three hundred million, two hundred twenty thousand, one hundred thirteen".