1224631109 has 4 divisors (see below), whose sum is σ = 1318833516. Its totient is φ = 1130428704.

The previous prime is 1224631103. The next prime is 1224631117. The reversal of 1224631109 is 9011364221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 128822500 + 1095808609 = 11350^2 + 33103^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1224631109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224631103) 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, 47101184 + ... + 47101209.

It is an arithmetic number, because the mean of its divisors is an integer number (329708379).

Almost surely, 2^1224631109 is an apocalyptic number.

It is an amenable number.

1224631109 is a deficient number, since it is larger than the sum of its proper divisors (94202407).

1224631109 is an equidigital number, since it uses as much as digits as its factorization.

1224631109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94202406.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1224631109 is about 34994.7297317753. The cubic root of 1224631109 is about 1069.8800660403.

The spelling of 1224631109 in words is "one billion, two hundred twenty-four million, six hundred thirty-one thousand, one hundred nine".