113145423239 has 2 divisors, whose sum is σ = 113145423240. Its totient is φ = 113145423238.

The previous prime is 113145423211. The next prime is 113145423241. The reversal of 113145423239 is 932324541311.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 113145423239 - 2²⁴ = 113128646023 is a prime.

It is a super-2 number, since 2×113145423239² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 113145423241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113145443239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56572711619 + 56572711620.

It is an arithmetic number, because the mean of its divisors is an integer number (56572711620).

Almost surely, 2^113145423239 is an apocalyptic number.

113145423239 is a deficient number, since it is larger than the sum of its proper divisors (1).

113145423239 is an equidigital number, since it uses as much as digits as its factorization.

113145423239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 38.

The spelling of 113145423239 in words is "one hundred thirteen billion, one hundred forty-five million, four hundred twenty-three thousand, two hundred thirty-nine".