1224989831 has 32 divisors (see below), whose sum is σ = 1443993600. Its totient is φ = 1029075840.

The previous prime is 1224989827. The next prime is 1224989833. The reversal of 1224989831 is 1389894221.

It is not a de Polignac number, because 1224989831 - 2² = 1224989827 is a prime.

It is a super-2 number, since 2×1224989831² = 3001200172106817122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224989833) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1201640 + ... + 1202658.

It is an arithmetic number, because the mean of its divisors is an integer number (45124800).

Almost surely, 2^1224989831 is an apocalyptic number.

1224989831 is a deficient number, since it is larger than the sum of its proper divisors (219003769).

1224989831 is a wasteful number, since it uses less digits than its factorization.

1224989831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239.

The product of its digits is 248832, while the sum is 47.

The square root of 1224989831 is about 34999.8547282699. The cubic root of 1224989831 is about 1069.9845198215.

The spelling of 1224989831 in words is "one billion, two hundred twenty-four million, nine hundred eighty-nine thousand, eight hundred thirty-one".