1315099623 has 4 divisors (see below), whose sum is σ = 1753466168. Its totient is φ = 876733080.

The previous prime is 1315099607. The next prime is 1315099631. The reversal of 1315099623 is 3269905131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3269905131 = 3 ⋅1089968377.

It is not a de Polignac number, because 1315099623 - 2⁴ = 1315099607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315099603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219183268 + ... + 219183273.

It is an arithmetic number, because the mean of its divisors is an integer number (438366542).

Almost surely, 2^1315099623 is an apocalyptic number.

1315099623 is a deficient number, since it is larger than the sum of its proper divisors (438366545).

1315099623 is an equidigital number, since it uses as much as digits as its factorization.

1315099623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438366544.

The product of its (nonzero) digits is 43740, while the sum is 39.

The square root of 1315099623 is about 36264.3023233593. The cubic root of 1315099623 is about 1095.6021716549.

The spelling of 1315099623 in words is "one billion, three hundred fifteen million, ninety-nine thousand, six hundred twenty-three".