22300311997 has 2 divisors, whose sum is σ = 22300311998. Its totient is φ = 22300311996.

The previous prime is 22300311991. The next prime is 22300312039. The reversal of 22300311997 is 79911300322.

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., 22290788601 + 9523396 = 149301^2 + 3086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22300311997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22300311991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11150155998 + 11150155999.

It is an arithmetic number, because the mean of its divisors is an integer number (11150155999).

Almost surely, 2^22300311997 is an apocalyptic number.

It is an amenable number.

22300311997 is a deficient number, since it is larger than the sum of its proper divisors (1).

22300311997 is an equidigital number, since it uses as much as digits as its factorization.

22300311997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 37.

The spelling of 22300311997 in words is "twenty-two billion, three hundred million, three hundred eleven thousand, nine hundred ninety-seven".