7313102221 has 4 divisors (see below), whose sum is σ = 7313364000. Its totient is φ = 7312840444.

The previous prime is 7313102141. The next prime is 7313102243. The reversal of 7313102221 is 1222013137.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-7313102221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7313102192 and 7313102201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7313102921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83191 + ... + 146788.

It is an arithmetic number, because the mean of its divisors is an integer number (1828341000).

Almost surely, 2^7313102221 is an apocalyptic number.

It is an amenable number.

7313102221 is a deficient number, since it is larger than the sum of its proper divisors (261779).

7313102221 is a wasteful number, since it uses less digits than its factorization.

7313102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261778.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 7313102221 is about 85516.6780283238. The cubic root of 7313102221 is about 1941.0373009533.

Adding to 7313102221 its reverse (1222013137), we get a palindrome (8535115358).

The spelling of 7313102221 in words is "seven billion, three hundred thirteen million, one hundred two thousand, two hundred twenty-one".