321316652051 has 2 divisors, whose sum is σ = 321316652052. Its totient is φ = 321316652050.

The previous prime is 321316652011. The next prime is 321316652053. The reversal of 321316652051 is 150256613123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 321316652051 - 2⁶ = 321316651987 is a prime.

Together with 321316652053, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (321316652053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160658326025 + 160658326026.

It is an arithmetic number, because the mean of its divisors is an integer number (160658326026).

Almost surely, 2^321316652051 is an apocalyptic number.

321316652051 is a deficient number, since it is larger than the sum of its proper divisors (1).

321316652051 is an equidigital number, since it uses as much as digits as its factorization.

321316652051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 321316652051 in words is "three hundred twenty-one billion, three hundred sixteen million, six hundred fifty-two thousand, fifty-one".