2721317297 has 4 divisors (see below), whose sum is σ = 2721722736. Its totient is φ = 2720911860.

The previous prime is 2721317281. The next prime is 2721317327. The reversal of 2721317297 is 7927131272.

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 2721317297 - 2⁴ = 2721317281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2721317227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192479 + ... + 206132.

It is an arithmetic number, because the mean of its divisors is an integer number (680430684).

Almost surely, 2^2721317297 is an apocalyptic number.

It is an amenable number.

2721317297 is a deficient number, since it is larger than the sum of its proper divisors (405439).

2721317297 is an equidigital number, since it uses as much as digits as its factorization.

2721317297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405438.

The product of its digits is 74088, while the sum is 41.

The square root of 2721317297 is about 52166.2467214194. The cubic root of 2721317297 is about 1396.1317190089.

The spelling of 2721317297 in words is "two billion, seven hundred twenty-one million, three hundred seventeen thousand, two hundred ninety-seven".