1313250001897 has 4 divisors (see below), whose sum is σ = 1355612905216. Its totient is φ = 1270887098580.

The previous prime is 1313250001883. The next prime is 1313250001909. The reversal of 1313250001897 is 7981000523131.

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 1313250001897 - 2⁷ = 1313250001769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313250001807) 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, 21181451613 + ... + 21181451674.

It is an arithmetic number, because the mean of its divisors is an integer number (338903226304).

Almost surely, 2^{1313250001897} is an apocalyptic number.

It is an amenable number.

1313250001897 is a deficient number, since it is larger than the sum of its proper divisors (42362903319).

1313250001897 is an equidigital number, since it uses as much as digits as its factorization.

1313250001897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42362903318.

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 1313250001897 in words is "one trillion, three hundred thirteen billion, two hundred fifty million, one thousand, eight hundred ninety-seven".