310427993 has 2 divisors, whose sum is σ = 310427994. Its totient is φ = 310427992.

The previous prime is 310427989. The next prime is 310428037. The reversal of 310427993 is 399724013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299878489 + 10549504 = 17317^2 + 3248^2 .

It is a cyclic number.

It is not a de Polignac number, because 310427993 - 2² = 310427989 is a prime.

It is not a weakly prime, because it can be changed into another prime (310427093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155213996 + 155213997.

It is an arithmetic number, because the mean of its divisors is an integer number (155213997).

Almost surely, 2^310427993 is an apocalyptic number.

It is an amenable number.

310427993 is a deficient number, since it is larger than the sum of its proper divisors (1).

310427993 is an equidigital number, since it uses as much as digits as its factorization.

310427993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 310427993 is about 17618.9668539333. The cubic root of 310427993 is about 677.1012658094.

The spelling of 310427993 in words is "three hundred ten million, four hundred twenty-seven thousand, nine hundred ninety-three".