231110421 has 8 divisors (see below), whose sum is σ = 314703744. Its totient is φ = 150795360.

The previous prime is 231110401. The next prime is 231110443. The reversal of 231110421 is 124011132.

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

It is not a de Polignac number, because 231110421 - 2⁹ = 231109909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231110421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231110401) 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, 819400 + ... + 819681.

It is an arithmetic number, because the mean of its divisors is an integer number (39337968).

Almost surely, 2^231110421 is an apocalyptic number.

It is an amenable number.

231110421 is a deficient number, since it is larger than the sum of its proper divisors (83593323).

231110421 is a wasteful number, since it uses less digits than its factorization.

231110421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639131.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 231110421 is about 15202.3163037742. The cubic root of 231110421 is about 613.6769946749.

Adding to 231110421 its reverse (124011132), we get a palindrome (355121553).

The spelling of 231110421 in words is "two hundred thirty-one million, one hundred ten thousand, four hundred twenty-one".