1224312541 has 4 divisors (see below), whose sum is σ = 1250361792. Its totient is φ = 1198263292.

The previous prime is 1224312539. The next prime is 1224312559. The reversal of 1224312541 is 1452134221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1452134221 = 181 ⋅8022841.

It is a cyclic number.

It is not a de Polignac number, because 1224312541 - 2¹ = 1224312539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224312041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13024555 + ... + 13024648.

It is an arithmetic number, because the mean of its divisors is an integer number (312590448).

Almost surely, 2^1224312541 is an apocalyptic number.

It is an amenable number.

1224312541 is a deficient number, since it is larger than the sum of its proper divisors (26049251).

1224312541 is an equidigital number, since it uses as much as digits as its factorization.

1224312541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26049250.

The product of its digits is 1920, while the sum is 25.

The square root of 1224312541 is about 34990.1777789139. The cubic root of 1224312541 is about 1069.7872873228.

Adding to 1224312541 its reverse (1452134221), we get a palindrome (2676446762).

The spelling of 1224312541 in words is "one billion, two hundred twenty-four million, three hundred twelve thousand, five hundred forty-one".