1223444231 has 8 divisors (see below), whose sum is σ = 1240229760. Its totient is φ = 1206760032.

The previous prime is 1223444207. The next prime is 1223444249. The reversal of 1223444231 is 1324443221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223444231 is a prime.

It is a super-2 number, since 2×1223444231² = 2993631572734362722, which contains 22 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 1223444231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223444251) 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, 860 + ... + 49473.

It is an arithmetic number, because the mean of its divisors is an integer number (155028720).

Almost surely, 2^1223444231 is an apocalyptic number.

1223444231 is a deficient number, since it is larger than the sum of its proper divisors (16785529).

1223444231 is a wasteful number, since it uses less digits than its factorization.

1223444231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50665.

The product of its digits is 4608, while the sum is 26.

The square root of 1223444231 is about 34977.7676674770. The cubic root of 1223444231 is about 1069.5343217727.

Adding to 1223444231 its reverse (1324443221), we get a palindrome (2547887452).

It can be divided in two parts, 12234 and 44231, that added together give a palindrome (56465).

The spelling of 1223444231 in words is "one billion, two hundred twenty-three million, four hundred forty-four thousand, two hundred thirty-one".