1224423231 has 4 divisors (see below), whose sum is σ = 1632564312. Its totient is φ = 816282152.

The previous prime is 1224423197. The next prime is 1224423247. The reversal of 1224423231 is 1323244221.

It is a happy number.

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 1224423231 - 2¹⁰ = 1224422207 is a prime.

It is a super-2 number, since 2×1224423231² = 2998424497224958722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224423281) 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, 204070536 + ... + 204070541.

It is an arithmetic number, because the mean of its divisors is an integer number (408141078).

Almost surely, 2^1224423231 is an apocalyptic number.

1224423231 is a deficient number, since it is larger than the sum of its proper divisors (408141081).

1224423231 is an equidigital number, since it uses as much as digits as its factorization.

1224423231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408141080.

The product of its digits is 2304, while the sum is 24.

The square root of 1224423231 is about 34991.7594727673. The cubic root of 1224423231 is about 1069.8195261460.

Adding to 1224423231 its reverse (1323244221), we get a palindrome (2547667452).

The spelling of 1224423231 in words is "one billion, two hundred twenty-four million, four hundred twenty-three thousand, two hundred thirty-one".