1315623 has 12 divisors (see below), whose sum is σ = 1835960. Its totient is φ = 837936.

The previous prime is 1315621. The next prime is 1315627. The reversal of 1315623 is 3265131.

It is not a de Polignac number, because 1315623 - 2¹ = 1315621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1315623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1173 + ... + 2001.

2^1315623 is an apocalyptic number.

1315623 is a deficient number, since it is larger than the sum of its proper divisors (520337).

1315623 is an equidigital number, since it uses as much as digits as its factorization.

1315623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878 (or 855 counting only the distinct ones).

The product of its digits is 540, while the sum is 21.

The square root of 1315623 is about 1147.0061028608. The cubic root of 1315623 is about 109.5747493200.

The spelling of 1315623 in words is "one million, three hundred fifteen thousand, six hundred twenty-three".