231113102221 has 4 divisors (see below), whose sum is σ = 231114166272. Its totient is φ = 231112038172.

The previous prime is 231113102219. The next prime is 231113102243. The reversal of 231113102221 is 122201311132.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 231113102221 - 2¹ = 231113102219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231113102261) 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, 75835 + ... + 684088.

It is an arithmetic number, because the mean of its divisors is an integer number (57778541568).

Almost surely, 2^231113102221 is an apocalyptic number.

It is an amenable number.

231113102221 is a deficient number, since it is larger than the sum of its proper divisors (1064051).

231113102221 is an equidigital number, since it uses as much as digits as its factorization.

231113102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064050.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 231113102221 its reverse (122201311132), we get a palindrome (353314413353).

The spelling of 231113102221 in words is "two hundred thirty-one billion, one hundred thirteen million, one hundred two thousand, two hundred twenty-one".