113509523 has 2 divisors, whose sum is σ = 113509524. Its totient is φ = 113509522.

The previous prime is 113509489. The next prime is 113509547. The reversal of 113509523 is 325905311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 113509523 - 2¹⁶ = 113443987 is a prime.

It is not a weakly prime, because it can be changed into another prime (113509423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56754761 + 56754762.

It is an arithmetic number, because the mean of its divisors is an integer number (56754762).

Almost surely, 2^113509523 is an apocalyptic number.

113509523 is a deficient number, since it is larger than the sum of its proper divisors (1).

113509523 is an equidigital number, since it uses as much as digits as its factorization.

113509523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 29.

The square root of 113509523 is about 10654.0848034920. The cubic root of 113509523 is about 484.1843704276.

The spelling of 113509523 in words is "one hundred thirteen million, five hundred nine thousand, five hundred twenty-three".