312199801 has 2 divisors, whose sum is σ = 312199802. Its totient is φ = 312199800.

The previous prime is 312199799. The next prime is 312199813. The reversal of 312199801 is 108991213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311346025 + 853776 = 17645^2 + 924^2 .

It is an emirp because it is prime and its reverse (108991213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312199801 - 2¹ = 312199799 is a prime.

Together with 312199799, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (312199831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156099900 + 156099901.

It is an arithmetic number, because the mean of its divisors is an integer number (156099901).

Almost surely, 2^312199801 is an apocalyptic number.

It is an amenable number.

312199801 is a deficient number, since it is larger than the sum of its proper divisors (1).

312199801 is an equidigital number, since it uses as much as digits as its factorization.

312199801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 312199801 is about 17669.1765795693. The cubic root of 312199801 is about 678.3870370758.

The spelling of 312199801 in words is "three hundred twelve million, one hundred ninety-nine thousand, eight hundred one".