231203144042113 has 4 divisors (see below), whose sum is σ = 231225497638848. Its totient is φ = 231180790445380.

The previous prime is 231203144042107. The next prime is 231203144042141. The reversal of 231203144042113 is 311240441302132.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231203144042113 - 2⁵ = 231203144042081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231203144042513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11176782853 + ... + 11176803538.

It is an arithmetic number, because the mean of its divisors is an integer number (57806374409712).

Almost surely, 2^{231203144042113} is an apocalyptic number.

It is an amenable number.

231203144042113 is a deficient number, since it is larger than the sum of its proper divisors (22353596735).

231203144042113 is a wasteful number, since it uses less digits than its factorization.

231203144042113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22353596734.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 231203144042113 its reverse (311240441302132), we get a palindrome (542443585344245).

The spelling of 231203144042113 in words is "two hundred thirty-one trillion, two hundred three billion, one hundred forty-four million, forty-two thousand, one hundred thirteen".