620313301081 has 2 divisors, whose sum is σ = 620313301082. Its totient is φ = 620313301080.

The previous prime is 620313301079. The next prime is 620313301207. The reversal of 620313301081 is 180103313026.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 383451985225 + 236861315856 = 619235^2 + 486684^2 .

It is a cyclic number.

It is not a de Polignac number, because 620313301081 - 2¹ = 620313301079 is a prime.

It is a super-2 number, since 2×620313301081² (a number of 24 digits) contains 22 as substring.

Together with 620313301079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (620313301051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310156650540 + 310156650541.

It is an arithmetic number, because the mean of its divisors is an integer number (310156650541).

Almost surely, 2^620313301081 is an apocalyptic number.

It is an amenable number.

620313301081 is a deficient number, since it is larger than the sum of its proper divisors (1).

620313301081 is an equidigital number, since it uses as much as digits as its factorization.

620313301081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 620313301081 in words is "six hundred twenty billion, three hundred thirteen million, three hundred one thousand, eighty-one".