113130031309 has 2 divisors, whose sum is σ = 113130031310. Its totient is φ = 113130031308.

The previous prime is 113130031307. The next prime is 113130031331. The reversal of 113130031309 is 903130031311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110837058084 + 2292973225 = 332922^2 + 47885^2 .

It is an emirp because it is prime and its reverse (903130031311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113130031309 - 2¹ = 113130031307 is a prime.

Together with 113130031307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113130031303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56565015654 + 56565015655.

It is an arithmetic number, because the mean of its divisors is an integer number (56565015655).

Almost surely, 2^113130031309 is an apocalyptic number.

It is an amenable number.

113130031309 is a deficient number, since it is larger than the sum of its proper divisors (1).

113130031309 is an equidigital number, since it uses as much as digits as its factorization.

113130031309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 25.

The spelling of 113130031309 in words is "one hundred thirteen billion, one hundred thirty million, thirty-one thousand, three hundred nine".