7351321013 has 2 divisors, whose sum is σ = 7351321014. Its totient is φ = 7351321012.

The previous prime is 7351321009. The next prime is 7351321049. The reversal of 7351321013 is 3101231537.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5116111729 + 2235209284 = 71527^2 + 47278^2 .

It is a cyclic number.

It is not a de Polignac number, because 7351321013 - 2² = 7351321009 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7351321073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3675660506 + 3675660507.

It is an arithmetic number, because the mean of its divisors is an integer number (3675660507).

Almost surely, 2^7351321013 is an apocalyptic number.

It is an amenable number.

7351321013 is a deficient number, since it is larger than the sum of its proper divisors (1).

7351321013 is an equidigital number, since it uses as much as digits as its factorization.

7351321013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 7351321013 is about 85739.8449555398. The cubic root of 7351321013 is about 1944.4127605996.

The spelling of 7351321013 in words is "seven billion, three hundred fifty-one million, three hundred twenty-one thousand, thirteen".