1315123267 has 4 divisors (see below), whose sum is σ = 1326761640. Its totient is φ = 1303484896.

The previous prime is 1315123253. The next prime is 1315123307. The reversal of 1315123267 is 7623215131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1315123267 - 2¹⁵ = 1315090499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315123207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5819017 + ... + 5819242.

It is an arithmetic number, because the mean of its divisors is an integer number (331690410).

Almost surely, 2^1315123267 is an apocalyptic number.

1315123267 is a deficient number, since it is larger than the sum of its proper divisors (11638373).

1315123267 is a wasteful number, since it uses less digits than its factorization.

1315123267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11638372.

The product of its digits is 7560, while the sum is 31.

The square root of 1315123267 is about 36264.6283174114. The cubic root of 1315123267 is about 1095.6087375104.

Adding to 1315123267 its reverse (7623215131), we get a palindrome (8938338398).

The spelling of 1315123267 in words is "one billion, three hundred fifteen million, one hundred twenty-three thousand, two hundred sixty-seven".