7291522313 has 4 divisors (see below), whose sum is σ = 7373449620. Its totient is φ = 7209595008.

The previous prime is 7291522267. The next prime is 7291522319. The reversal of 7291522313 is 3132251927.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 876633664 + 6414888649 = 29608^2 + 80093^2 .

It is a cyclic number.

It is not a de Polignac number, because 7291522313 - 2⁸ = 7291522057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7291522319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40963520 + ... + 40963697.

It is an arithmetic number, because the mean of its divisors is an integer number (1843362405).

Almost surely, 2^7291522313 is an apocalyptic number.

It is an amenable number.

7291522313 is a deficient number, since it is larger than the sum of its proper divisors (81927307).

7291522313 is an equidigital number, since it uses as much as digits as its factorization.

7291522313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81927306.

The product of its digits is 22680, while the sum is 35.

The square root of 7291522313 is about 85390.4111302903. The cubic root of 7291522313 is about 1939.1261796982.

The spelling of 7291522313 in words is "seven billion, two hundred ninety-one million, five hundred twenty-two thousand, three hundred thirteen".