202331231121997 has 2 divisors, whose sum is σ = 202331231121998. Its totient is φ = 202331231121996.

The previous prime is 202331231121961. The next prime is 202331231122021. The reversal of 202331231121997 is 799121132133202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202229047967076 + 102183154921 = 14220726^2 + 319661^2 .

It is a cyclic number.

It is not a de Polignac number, because 202331231121997 - 2³⁹ = 201781475308109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202331231122997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101165615560998 + 101165615560999.

It is an arithmetic number, because the mean of its divisors is an integer number (101165615560999).

Almost surely, 2^{202331231121997} is an apocalyptic number.

It is an amenable number.

202331231121997 is a deficient number, since it is larger than the sum of its proper divisors (1).

202331231121997 is an equidigital number, since it uses as much as digits as its factorization.

202331231121997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 202331231121997 in words is "two hundred two trillion, three hundred thirty-one billion, two hundred thirty-one million, one hundred twenty-one thousand, nine hundred ninety-seven".