1313272899 has 16 divisors (see below), whose sum is σ = 2060036640. Its totient is φ = 824014080.

The previous prime is 1313272867. The next prime is 1313272921. The reversal of 1313272899 is 9982723131.

It is not a de Polignac number, because 1313272899 - 2⁵ = 1313272867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1313272999) 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, 1430122 + ... + 1431039.

It is an arithmetic number, because the mean of its divisors is an integer number (128752290).

Almost surely, 2^1313272899 is an apocalyptic number.

1313272899 is a deficient number, since it is larger than the sum of its proper divisors (746763741).

1313272899 is a wasteful number, since it uses less digits than its factorization.

1313272899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861187 (or 2861181 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 1313272899 is about 36239.1073151644. The cubic root of 1313272899 is about 1095.0946587337.

The spelling of 1313272899 in words is "one billion, three hundred thirteen million, two hundred seventy-two thousand, eight hundred ninety-nine".