1224303145 has 16 divisors (see below), whose sum is σ = 1583265600. Its totient is φ = 903478464.

The previous prime is 1224303107. The next prime is 1224303149. The reversal of 1224303145 is 5413034221.

It is a cyclic number.

It is not a de Polignac number, because 1224303145 - 2²³ = 1215914537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1224303149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102706 + ... + 114004.

It is an arithmetic number, because the mean of its divisors is an integer number (98954100).

Almost surely, 2^1224303145 is an apocalyptic number.

It is an amenable number.

1224303145 is a deficient number, since it is larger than the sum of its proper divisors (358962455).

1224303145 is a wasteful number, since it uses less digits than its factorization.

1224303145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12984.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1224303145 is about 34990.0435124051. The cubic root of 1224303145 is about 1069.7845506178.

Adding to 1224303145 its reverse (5413034221), we get a palindrome (6637337366).

The spelling of 1224303145 in words is "one billion, two hundred twenty-four million, three hundred three thousand, one hundred forty-five".