7315256147 has 2 divisors, whose sum is σ = 7315256148. Its totient is φ = 7315256146.

The previous prime is 7315256131. The next prime is 7315256149. The reversal of 7315256147 is 7416525137.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7315256147 - 2⁴ = 7315256131 is a prime.

Together with 7315256149, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7315256149) 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 as a sum of consecutive naturals, namely, 3657628073 + 3657628074.

It is an arithmetic number, because the mean of its divisors is an integer number (3657628074).

Almost surely, 2^7315256147 is an apocalyptic number.

7315256147 is a deficient number, since it is larger than the sum of its proper divisors (1).

7315256147 is an equidigital number, since it uses as much as digits as its factorization.

7315256147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 176400, while the sum is 41.

The square root of 7315256147 is about 85529.2707030757. The cubic root of 7315256147 is about 1941.2278466427.

The spelling of 7315256147 in words is "seven billion, three hundred fifteen million, two hundred fifty-six thousand, one hundred forty-seven".