1223243231 has 8 divisors (see below), whose sum is σ = 1430504064. Its totient is φ = 1024110360.

The previous prime is 1223243207. The next prime is 1223243239. The reversal of 1223243231 is 1323423221.

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

It is not a de Polignac number, because 1223243231 - 2¹⁴ = 1223226847 is a prime.

It is a super-2 number, since 2×1223243231² = 2992648004374638722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223243197 and 1223243206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223243239) 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, 2031665 + ... + 2032266.

It is an arithmetic number, because the mean of its divisors is an integer number (178813008).

Almost surely, 2^1223243231 is an apocalyptic number.

1223243231 is a deficient number, since it is larger than the sum of its proper divisors (207260833).

1223243231 is an equidigital number, since it uses as much as digits as its factorization.

1223243231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4063981.

The product of its digits is 1728, while the sum is 23.

The square root of 1223243231 is about 34974.8942957659. The cubic root of 1223243231 is about 1069.4757471990.

Adding to 1223243231 its reverse (1323423221), we get a palindrome (2546666452).

The spelling of 1223243231 in words is "one billion, two hundred twenty-three million, two hundred forty-three thousand, two hundred thirty-one".