113172523 has 2 divisors, whose sum is σ = 113172524. Its totient is φ = 113172522.

The previous prime is 113172511. The next prime is 113172533. The reversal of 113172523 is 325271311.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (325271311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113172523 - 2⁵ = 113172491 is a prime.

It is not a weakly prime, because it can be changed into another prime (113172533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56586261 + 56586262.

It is an arithmetic number, because the mean of its divisors is an integer number (56586262).

Almost surely, 2^113172523 is an apocalyptic number.

113172523 is a deficient number, since it is larger than the sum of its proper divisors (1).

113172523 is an equidigital number, since it uses as much as digits as its factorization.

113172523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 25.

The square root of 113172523 is about 10638.2575170937. The cubic root of 113172523 is about 483.7047282069.

The spelling of 113172523 in words is "one hundred thirteen million, one hundred seventy-two thousand, five hundred twenty-three".