113681138731 has 2 divisors, whose sum is σ = 113681138732. Its totient is φ = 113681138730.

The previous prime is 113681138663. The next prime is 113681138749. The reversal of 113681138731 is 137831186311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 113681138731 - 2¹³ = 113681130539 is a prime.

It is a super-2 number, since 2×113681138731² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (113681132731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56840569365 + 56840569366.

It is an arithmetic number, because the mean of its divisors is an integer number (56840569366).

Almost surely, 2^113681138731 is an apocalyptic number.

113681138731 is a deficient number, since it is larger than the sum of its proper divisors (1).

113681138731 is an equidigital number, since it uses as much as digits as its factorization.

113681138731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 43.

The spelling of 113681138731 in words is "one hundred thirteen billion, six hundred eighty-one million, one hundred thirty-eight thousand, seven hundred thirty-one".