231200222019913 has 2 divisors, whose sum is σ = 231200222019914. Its totient is φ = 231200222019912.

The previous prime is 231200222019797. The next prime is 231200222019997. The reversal of 231200222019913 is 319910222002132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185732550627129 + 45467671392784 = 13628373^2 + 6742972^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231200222019913 is a prime.

It is not a weakly prime, because it can be changed into another prime (231200222017913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115600111009956 + 115600111009957.

It is an arithmetic number, because the mean of its divisors is an integer number (115600111009957).

Almost surely, 2^{231200222019913} is an apocalyptic number.

It is an amenable number.

231200222019913 is a deficient number, since it is larger than the sum of its proper divisors (1).

231200222019913 is an equidigital number, since it uses as much as digits as its factorization.

231200222019913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 231200222019913 in words is "two hundred thirty-one trillion, two hundred billion, two hundred twenty-two million, nineteen thousand, nine hundred thirteen".