13915123 has 2 divisors, whose sum is σ = 13915124. Its totient is φ = 13915122.

The previous prime is 13915117. The next prime is 13915127. The reversal of 13915123 is 32151931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13915123 - 2⁹ = 13914611 is a prime.

It is not a weakly prime, because it can be changed into another prime (13915127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6957561 + 6957562.

It is an arithmetic number, because the mean of its divisors is an integer number (6957562).

Almost surely, 2^13915123 is an apocalyptic number.

13915123 is a deficient number, since it is larger than the sum of its proper divisors (1).

13915123 is an equidigital number, since it uses as much as digits as its factorization.

13915123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810, while the sum is 25.

The square root of 13915123 is about 3730.2979773739. The cubic root of 13915123 is about 240.5261777370.

The spelling of 13915123 in words is "thirteen million, nine hundred fifteen thousand, one hundred twenty-three".