7313102921 has 2 divisors, whose sum is σ = 7313102922. Its totient is φ = 7313102920.

The previous prime is 7313102911. The next prime is 7313102933. The reversal of 7313102921 is 1292013137.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6852528400 + 460574521 = 82780^2 + 21461^2 .

It is an emirp because it is prime and its reverse (1292013137) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7313102921 is a prime.

It is not a weakly prime, because it can be changed into another prime (7313102911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3656551460 + 3656551461.

It is an arithmetic number, because the mean of its divisors is an integer number (3656551461).

Almost surely, 2^7313102921 is an apocalyptic number.

It is an amenable number.

7313102921 is a deficient number, since it is larger than the sum of its proper divisors (1).

7313102921 is an equidigital number, since it uses as much as digits as its factorization.

7313102921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 7313102921 is about 85516.6821210926. The cubic root of 7313102921 is about 1941.0373628844.

The spelling of 7313102921 in words is "seven billion, three hundred thirteen million, one hundred two thousand, nine hundred twenty-one".