113031020321 has 2 divisors, whose sum is σ = 113031020322. Its totient is φ = 113031020320.

The previous prime is 113031020309. The next prime is 113031020353. The reversal of 113031020321 is 123020130311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112284637921 + 746382400 = 335089^2 + 27320^2 .

It is a cyclic number.

It is not a de Polignac number, because 113031020321 - 2⁶ = 113031020257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113031020321.

It is not a weakly prime, because it can be changed into another prime (113031020621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56515510160 + 56515510161.

It is an arithmetic number, because the mean of its divisors is an integer number (56515510161).

Almost surely, 2^113031020321 is an apocalyptic number.

It is an amenable number.

113031020321 is a deficient number, since it is larger than the sum of its proper divisors (1).

113031020321 is an equidigital number, since it uses as much as digits as its factorization.

113031020321 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 17.

Adding to 113031020321 its reverse (123020130311), we get a palindrome (236051150632).

The spelling of 113031020321 in words is "one hundred thirteen billion, thirty-one million, twenty thousand, three hundred twenty-one".