1297485313 has 4 divisors (see below), whose sum is σ = 1298135088. Its totient is φ = 1296835540.

The previous prime is 1297485307. The next prime is 1297485331. The reversal of 1297485313 is 3135847921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1297485313 - 2¹³ = 1297477121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1297485313.

It is not an unprimeable number, because it can be changed into a prime (1297485113) 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, 321883 + ... + 325888.

It is an arithmetic number, because the mean of its divisors is an integer number (324533772).

Almost surely, 2^1297485313 is an apocalyptic number.

It is an amenable number.

1297485313 is a deficient number, since it is larger than the sum of its proper divisors (649775).

1297485313 is an equidigital number, since it uses as much as digits as its factorization.

1297485313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649774.

The product of its digits is 181440, while the sum is 43.

The square root of 1297485313 is about 36020.6234399129. The cubic root of 1297485313 is about 1090.6887079234.

The spelling of 1297485313 in words is "one billion, two hundred ninety-seven million, four hundred eighty-five thousand, three hundred thirteen".