1223304031 has 4 divisors (see below), whose sum is σ = 1228646200. Its totient is φ = 1217961864.

The previous prime is 1223304029. The next prime is 1223304127. The reversal of 1223304031 is 1304033221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1223304031 - 2¹ = 1223304029 is a prime.

It is a super-2 number, since 2×1223304031² = 2992945504521697922, 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 (1223304011) 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, 2670741 + ... + 2671198.

It is an arithmetic number, because the mean of its divisors is an integer number (307161550).

Almost surely, 2^1223304031 is an apocalyptic number.

1223304031 is a deficient number, since it is larger than the sum of its proper divisors (5342169).

1223304031 is an equidigital number, since it uses as much as digits as its factorization.

1223304031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5342168.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1223304031 is about 34975.7634798727. The cubic root of 1223304031 is about 1069.4934659559.

Adding to 1223304031 its reverse (1304033221), we get a palindrome (2527337252).

The spelling of 1223304031 in words is "one billion, two hundred twenty-three million, three hundred four thousand, thirty-one".