1223031243 has 8 divisors (see below), whose sum is σ = 1863666688. Its totient is φ = 698874984.

The previous prime is 1223031211. The next prime is 1223031247. The reversal of 1223031243 is 3421303221.

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

It is not a de Polignac number, because 1223031243 - 2⁵ = 1223031211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 58239583 = 1223031243 / (1 + 2 + 2 + 3 + 0 + 3 + 1 + 2 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223031247) 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, 29119771 + ... + 29119812.

It is an arithmetic number, because the mean of its divisors is an integer number (232958336).

Almost surely, 2^1223031243 is an apocalyptic number.

1223031243 is a deficient number, since it is larger than the sum of its proper divisors (640635445).

1223031243 is an equidigital number, since it uses as much as digits as its factorization.

1223031243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58239593.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1223031243 is about 34971.8635906067. The cubic root of 1223031243 is about 1069.4139635960.

Adding to 1223031243 its reverse (3421303221), we get a palindrome (4644334464).

The spelling of 1223031243 in words is "one billion, two hundred twenty-three million, thirty-one thousand, two hundred forty-three".