7261321317 has 32 divisors (see below), whose sum is σ = 9900527616. Its totient is φ = 4733040000.

The previous prime is 7261321307. The next prime is 7261321349. The reversal of 7261321317 is 7131231627.

It is not a de Polignac number, because 7261321317 - 2⁷ = 7261321189 is a prime.

It is a super-2 number, since 2×7261321317² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7261321307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13937017 + ... + 13937537.

It is an arithmetic number, because the mean of its divisors is an integer number (309391488).

Almost surely, 2^7261321317 is an apocalyptic number.

It is an amenable number.

7261321317 is a deficient number, since it is larger than the sum of its proper divisors (2639206299).

7261321317 is a wasteful number, since it uses less digits than its factorization.

7261321317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081.

The product of its digits is 10584, while the sum is 33.

The square root of 7261321317 is about 85213.3869588576. The cubic root of 7261321317 is about 1936.4452313554.

The spelling of 7261321317 in words is "seven billion, two hundred sixty-one million, three hundred twenty-one thousand, three hundred seventeen".