231344121 has 8 divisors (see below), whose sum is σ = 308567584. Its totient is φ = 154175040.

The previous prime is 231344119. The next prime is 231344123. The reversal of 231344121 is 121443132.

It is an interprime number because it is at equal distance from previous prime (231344119) and next prime (231344123).

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

It is not a de Polignac number, because 231344121 - 2¹ = 231344119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231344123) 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, 2335 + ... + 21636.

It is an arithmetic number, because the mean of its divisors is an integer number (38570948).

Almost surely, 2^231344121 is an apocalyptic number.

It is an amenable number.

231344121 is a deficient number, since it is larger than the sum of its proper divisors (77223463).

231344121 is a wasteful number, since it uses less digits than its factorization.

231344121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27191.

The product of its digits is 576, while the sum is 21.

The square root of 231344121 is about 15210.0006903353. Note that the first 3 decimals coincide. The cubic root of 231344121 is about 613.8837760611.

Subtracting from 231344121 its sum of digits (21), we obtain a square (231344100 = 15210²).

Adding to 231344121 its reverse (121443132), we get a palindrome (352787253).

The spelling of 231344121 in words is "two hundred thirty-one million, three hundred forty-four thousand, one hundred twenty-one".