1224871231 has 4 divisors (see below), whose sum is σ = 1267108200. Its totient is φ = 1182634264.

The previous prime is 1224871217. The next prime is 1224871303. The reversal of 1224871231 is 1321784221.

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 1224871231 - 2⁷ = 1224871103 is a prime.

It is a super-2 number, since 2×1224871231² = 3000619065062910722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1224871193 and 1224871202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224871331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21118441 + ... + 21118498.

It is an arithmetic number, because the mean of its divisors is an integer number (316777050).

Almost surely, 2^1224871231 is an apocalyptic number.

1224871231 is a deficient number, since it is larger than the sum of its proper divisors (42236969).

1224871231 is an equidigital number, since it uses as much as digits as its factorization.

1224871231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42236968.

The product of its digits is 5376, while the sum is 31.

The square root of 1224871231 is about 34998.1603945122. The cubic root of 1224871231 is about 1069.9499877635.

The spelling of 1224871231 in words is "one billion, two hundred twenty-four million, eight hundred seventy-one thousand, two hundred thirty-one".