113613523 has 4 divisors (see below), whose sum is σ = 116030880. Its totient is φ = 111196168.

The previous prime is 113613473. The next prime is 113613547. The reversal of 113613523 is 325316311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325316311 = 3137 ⋅103703.

It is a cyclic number.

It is not a de Polignac number, because 113613523 - 2⁹ = 113613011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113613593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208608 + ... + 1208701.

It is an arithmetic number, because the mean of its divisors is an integer number (29007720).

Almost surely, 2^113613523 is an apocalyptic number.

113613523 is a deficient number, since it is larger than the sum of its proper divisors (2417357).

113613523 is an equidigital number, since it uses as much as digits as its factorization.

113613523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2417356.

The product of its digits is 1620, while the sum is 25.

The square root of 113613523 is about 10658.9644431342. The cubic root of 113613523 is about 484.3321988570.

Adding to 113613523 its reverse (325316311), we get a palindrome (438929834).

It can be divided in two parts, 11361 and 3523, that added together give a square (14884 = 122²).

The spelling of 113613523 in words is "one hundred thirteen million, six hundred thirteen thousand, five hundred twenty-three".