2123231 has 8 divisors (see below), whose sum is σ = 2438400. Its totient is φ = 1828440.

The previous prime is 2123213. The next prime is 2123237. The reversal of 2123231 is 1323212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2123231 - 2⁶ = 2123167 is a prime.

It is a super-2 number, since 2×2123231² = 9016219758722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123237) 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, 4871 + ... + 5288.

It is an arithmetic number, because the mean of its divisors is an integer number (304800).

2^2123231 is an apocalyptic number.

2123231 is a deficient number, since it is larger than the sum of its proper divisors (315169).

2123231 is a wasteful number, since it uses less digits than its factorization.

2123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10189.

The product of its digits is 72, while the sum is 14.

The square root of 2123231 is about 1457.1310853866. The cubic root of 2123231 is about 128.5283943572.

Adding to 2123231 its reverse (1323212), we get a palindrome (3446443).

It can be divided in two parts, 212 and 3231, that added together give a palindrome (3443).

The spelling of 2123231 in words is "two million, one hundred twenty-three thousand, two hundred thirty-one".