1315612347 has 16 divisors (see below), whose sum is σ = 2073872640. Its totient is φ = 725854752.

The previous prime is 1315612339. The next prime is 1315612357. The reversal of 1315612347 is 7432165131.

It is not a de Polignac number, because 1315612347 - 2³ = 1315612339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1315612357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1079533 + ... + 1080750.

It is an arithmetic number, because the mean of its divisors is an integer number (129617040).

Almost surely, 2^1315612347 is an apocalyptic number.

1315612347 is a deficient number, since it is larger than the sum of its proper divisors (758260293).

1315612347 is a wasteful number, since it uses less digits than its factorization.

1315612347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160322.

The product of its digits is 15120, while the sum is 33.

The square root of 1315612347 is about 36271.3709004774. The cubic root of 1315612347 is about 1095.7445356581.

Adding to 1315612347 its reverse (7432165131), we get a palindrome (8747777478).

The spelling of 1315612347 in words is "one billion, three hundred fifteen million, six hundred twelve thousand, three hundred forty-seven".