113291718523 has 2 divisors, whose sum is σ = 113291718524. Its totient is φ = 113291718522.

The previous prime is 113291718479. The next prime is 113291718599. The reversal of 113291718523 is 325817192311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113291718523 - 2²¹ = 113289621371 is a prime.

It is a super-2 number, since 2×113291718523² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 113291718523.

It is not a weakly prime, because it can be changed into another prime (113291713523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56645859261 + 56645859262.

It is an arithmetic number, because the mean of its divisors is an integer number (56645859262).

Almost surely, 2^113291718523 is an apocalyptic number.

113291718523 is a deficient number, since it is larger than the sum of its proper divisors (1).

113291718523 is an equidigital number, since it uses as much as digits as its factorization.

113291718523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 43.

The spelling of 113291718523 in words is "one hundred thirteen billion, two hundred ninety-one million, seven hundred eighteen thousand, five hundred twenty-three".