7310891345956 has 45 divisors (see below), whose sum is σ = 14074638156705. Its totient is φ = 3322835004720.

The previous prime is 7310891345939. The next prime is 7310891345959. The reversal of 7310891345956 is 6595431980137.

It is a happy number.

The square root of 7310891345956 is 2703866.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3422833008100 + 3888058337856 = 1850090^2 + 1971816^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7310891345894 and 7310891345903.

It is not an unprimeable number, because it can be changed into a prime (7310891345959) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 654329986 + ... + 654341158.

Almost surely, 2^{7310891345956} is an apocalyptic number.

7310891345956 is the 2703866-th square number.

It is an amenable number.

7310891345956 is a deficient number, since it is larger than the sum of its proper divisors (6763746810749).

7310891345956 is an frugal number, since it uses more digits than its factorization.

7310891345956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22394 (or 11186 counting only the distinct ones).

The product of its (nonzero) digits is 24494400, while the sum is 61.

The spelling of 7310891345956 in words is "seven trillion, three hundred ten billion, eight hundred ninety-one million, three hundred forty-five thousand, nine hundred fifty-six".