113312231261 has 2 divisors, whose sum is σ = 113312231262. Its totient is φ = 113312231260.

The previous prime is 113312231257. The next prime is 113312231297. The reversal of 113312231261 is 162132213311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89203768900 + 24108462361 = 298670^2 + 155269^2 .

It is an emirp because it is prime and its reverse (162132213311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113312231261 - 2² = 113312231257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113312231261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113312531261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56656115630 + 56656115631.

It is an arithmetic number, because the mean of its divisors is an integer number (56656115631).

Almost surely, 2^113312231261 is an apocalyptic number.

It is an amenable number.

113312231261 is a deficient number, since it is larger than the sum of its proper divisors (1).

113312231261 is an equidigital number, since it uses as much as digits as its factorization.

113312231261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

Adding to 113312231261 its reverse (162132213311), we get a palindrome (275444444572).

The spelling of 113312231261 in words is "one hundred thirteen billion, three hundred twelve million, two hundred thirty-one thousand, two hundred sixty-one".