231124121 has 4 divisors (see below), whose sum is σ = 231315252. Its totient is φ = 230932992.

The previous prime is 231124111. The next prime is 231124123. The reversal of 231124121 is 121421132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 62410000 + 168714121 = 7900^2 + 12989^2 .

It is a cyclic number.

It is not a de Polignac number, because 231124121 - 2¹⁸ = 230861977 is a prime.

It is a super-4 number, since 4×231124121⁴ (a number of 35 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231124121.

It is not an unprimeable number, because it can be changed into a prime (231124123) 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, 93740 + ... + 96173.

It is an arithmetic number, because the mean of its divisors is an integer number (57828813).

Almost surely, 2^231124121 is an apocalyptic number.

It is an amenable number.

231124121 is a deficient number, since it is larger than the sum of its proper divisors (191131).

231124121 is a wasteful number, since it uses less digits than its factorization.

231124121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191130.

The product of its digits is 96, while the sum is 17.

The square root of 231124121 is about 15202.7668863270. The cubic root of 231124121 is about 613.6891204929.

Adding to 231124121 its reverse (121421132), we get a palindrome (352545253).

The spelling of 231124121 in words is "two hundred thirty-one million, one hundred twenty-four thousand, one hundred twenty-one".