302111201993 has 2 divisors, whose sum is σ = 302111201994. Its totient is φ = 302111201992.

The previous prime is 302111201989. The next prime is 302111202007. The reversal of 302111201993 is 399102111203.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 280336363024 + 21774838969 = 529468^2 + 147563^2 .

It is an emirp because it is prime and its reverse (399102111203) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 302111201993 - 2² = 302111201989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (302111231993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151055600996 + 151055600997.

It is an arithmetic number, because the mean of its divisors is an integer number (151055600997).

Almost surely, 2^302111201993 is an apocalyptic number.

It is an amenable number.

302111201993 is a deficient number, since it is larger than the sum of its proper divisors (1).

302111201993 is an equidigital number, since it uses as much as digits as its factorization.

302111201993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 302111201993 in words is "three hundred two billion, one hundred eleven million, two hundred one thousand, nine hundred ninety-three".