113121523 has 2 divisors, whose sum is σ = 113121524. Its totient is φ = 113121522.

The previous prime is 113121517. The next prime is 113121529. The reversal of 113121523 is 325121311.

It is a balanced prime because it is at equal distance from previous prime (113121517) and next prime (113121529).

It is a cyclic number.

It is not a de Polignac number, because 113121523 - 2¹³ = 113113331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113121523.

It is not a weakly prime, because it can be changed into another prime (113121529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56560761 + 56560762.

It is an arithmetic number, because the mean of its divisors is an integer number (56560762).

Almost surely, 2^113121523 is an apocalyptic number.

113121523 is a deficient number, since it is larger than the sum of its proper divisors (1).

113121523 is an equidigital number, since it uses as much as digits as its factorization.

113121523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 180, while the sum is 19.

The square root of 113121523 is about 10635.8602378933. The cubic root of 113121523 is about 483.6320584840.

Adding to 113121523 its reverse (325121311), we get a palindrome (438242834).

The spelling of 113121523 in words is "one hundred thirteen million, one hundred twenty-one thousand, five hundred twenty-three".