2231344121 has 4 divisors (see below), whose sum is σ = 2231489652. Its totient is φ = 2231198592.

The previous prime is 2231344117. The next prime is 2231344127. The reversal of 2231344121 is 1214431322.

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 1220803600 + 1010540521 = 34940^2 + 31789^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231344121 - 2² = 2231344117 is a prime.

It is a super-3 number, since 3×2231344121³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2231344127) 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, 46640 + ... + 81473.

It is an arithmetic number, because the mean of its divisors is an integer number (557872413).

Almost surely, 2^2231344121 is an apocalyptic number.

It is an amenable number.

2231344121 is a deficient number, since it is larger than the sum of its proper divisors (145531).

2231344121 is a wasteful number, since it uses less digits than its factorization.

2231344121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145530.

The product of its digits is 1152, while the sum is 23.

The square root of 2231344121 is about 47237.1053410346. The cubic root of 2231344121 is about 1306.7389941207.

Adding to 2231344121 its reverse (1214431322), we get a palindrome (3445775443).

The spelling of 2231344121 in words is "two billion, two hundred thirty-one million, three hundred forty-four thousand, one hundred twenty-one".