113305123 has 2 divisors, whose sum is σ = 113305124. Its totient is φ = 113305122.

The previous prime is 113305111. The next prime is 113305147. The reversal of 113305123 is 321503311.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113305123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113305123.

It is not a weakly prime, because it can be changed into another prime (113305163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56652561 + 56652562.

It is an arithmetic number, because the mean of its divisors is an integer number (56652562).

Almost surely, 2^113305123 is an apocalyptic number.

113305123 is a deficient number, since it is larger than the sum of its proper divisors (1).

113305123 is an equidigital number, since it uses as much as digits as its factorization.

113305123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 113305123 is about 10644.4879162879. The cubic root of 113305123 is about 483.8935673694.

Adding to 113305123 its reverse (321503311), we get a palindrome (434808434).

The spelling of 113305123 in words is "one hundred thirteen million, three hundred five thousand, one hundred twenty-three".