231200222019997 has 2 divisors, whose sum is σ = 231200222019998. Its totient is φ = 231200222019996.

The previous prime is 231200222019913. The next prime is 231200222020021. The reversal of 231200222019997 is 799910222002132.

231200222019997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199519410517956 + 31680811502041 = 14125134^2 + 5628571^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231200222019997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231200222019997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231200222019797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115600111009998 + 115600111009999.

It is an arithmetic number, because the mean of its divisors is an integer number (115600111009999).

Almost surely, 2^{231200222019997} is an apocalyptic number.

It is an amenable number.

231200222019997 is a deficient number, since it is larger than the sum of its proper divisors (1).

231200222019997 is an equidigital number, since it uses as much as digits as its factorization.

231200222019997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 49.

The spelling of 231200222019997 in words is "two hundred thirty-one trillion, two hundred billion, two hundred twenty-two million, nineteen thousand, nine hundred ninety-seven".