231111231203 has 4 divisors (see below), whose sum is σ = 231113361768. Its totient is φ = 231109100640.

The previous prime is 231111231199. The next prime is 231111231251. The reversal of 231111231203 is 302132111132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231111231203 - 2² = 231111231199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231111233203) 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, 893318 + ... + 1122603.

It is an arithmetic number, because the mean of its divisors is an integer number (57778340442).

Almost surely, 2^231111231203 is an apocalyptic number.

231111231203 is a deficient number, since it is larger than the sum of its proper divisors (2130565).

231111231203 is a wasteful number, since it uses less digits than its factorization.

231111231203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130564.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 231111231203 its reverse (302132111132), we get a palindrome (533243342335).

The spelling of 231111231203 in words is "two hundred thirty-one billion, one hundred eleven million, two hundred thirty-one thousand, two hundred three".