1315123 has 6 divisors (see below), whose sum is σ = 1388364. Its totient is φ = 1245564.

The previous prime is 1315087. The next prime is 1315151. The reversal of 1315123 is 3215131.

It is a de Polignac number, because none of the positive numbers 2^k-1315123 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1315097 and 1315106.

It is not an unprimeable number, because it can be changed into a prime (1315183) 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, 1461 + ... + 2182.

It is an arithmetic number, because the mean of its divisors is an integer number (231394).

2^1315123 is an apocalyptic number.

1315123 is a deficient number, since it is larger than the sum of its proper divisors (73241).

1315123 is an equidigital number, since it uses as much as digits as its factorization.

1315123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3681 (or 3662 counting only the distinct ones).

The product of its digits is 90, while the sum is 16.

The square root of 1315123 is about 1146.7881234125. The cubic root of 1315123 is about 109.5608663366.

The spelling of 1315123 in words is "one million, three hundred fifteen thousand, one hundred twenty-three".