1313331647 has 16 divisors (see below), whose sum is σ = 1383911424. Its totient is φ = 1244700000.

The previous prime is 1313331641. The next prime is 1313331653. The reversal of 1313331647 is 7461333131.

It is an interprime number because it is at equal distance from previous prime (1313331641) and next prime (1313331653).

It is a cyclic number.

It is not a de Polignac number, because 1313331647 - 2²⁸ = 1044896191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313331641) 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, 473258 + ... + 476024.

It is an arithmetic number, because the mean of its divisors is an integer number (86494464).

Almost surely, 2^1313331647 is an apocalyptic number.

1313331647 is a deficient number, since it is larger than the sum of its proper divisors (70579777).

1313331647 is a wasteful number, since it uses less digits than its factorization.

1313331647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110.

The product of its digits is 13608, while the sum is 32.

The square root of 1313331647 is about 36239.9178669047. The cubic root of 1313331647 is about 1095.1109878257.

Adding to 1313331647 its reverse (7461333131), we get a palindrome (8774664778).

The spelling of 1313331647 in words is "one billion, three hundred thirteen million, three hundred thirty-one thousand, six hundred forty-seven".