15397123 has 6 divisors (see below), whose sum is σ = 17910996. Its totient is φ = 13197492.

The previous prime is 15397117. The next prime is 15397141. The reversal of 15397123 is 32179351.

15397123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15397123 - 2¹³ = 15388931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15397103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 157065 + ... + 157162.

It is an arithmetic number, because the mean of its divisors is an integer number (2985166).

Almost surely, 2^15397123 is an apocalyptic number.

15397123 is a deficient number, since it is larger than the sum of its proper divisors (2513873).

15397123 is an equidigital number, since it uses as much as digits as its factorization.

15397123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314241 (or 314234 counting only the distinct ones).

The product of its digits is 5670, while the sum is 31.

The square root of 15397123 is about 3923.9167932055. The cubic root of 15397123 is about 248.7786994151.

The spelling of 15397123 in words is "fifteen million, three hundred ninety-seven thousand, one hundred twenty-three".