231203321121111 has 8 divisors (see below), whose sum is σ = 308340353685504. Its totient is φ = 154100917985400.

The previous prime is 231203321121041. The next prime is 231203321121127. The reversal of 231203321121111 is 111121123302132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231203321121111 - 2⁹ = 231203321120599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231203321121161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8657341591 + ... + 8657368296.

It is an arithmetic number, because the mean of its divisors is an integer number (38542544210688).

Almost surely, 2^{231203321121111} is an apocalyptic number.

231203321121111 is a deficient number, since it is larger than the sum of its proper divisors (77137032564393).

231203321121111 is a wasteful number, since it uses less digits than its factorization.

231203321121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17314714341.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 231203321121111 its reverse (111121123302132), we get a palindrome (342324444423243).

The spelling of 231203321121111 in words is "two hundred thirty-one trillion, two hundred three billion, three hundred twenty-one million, one hundred twenty-one thousand, one hundred eleven".