1224020331 has 12 divisors (see below), whose sum is σ = 1768960960. Its totient is φ = 815583600.

The previous prime is 1224020323. The next prime is 1224020351. The reversal of 1224020331 is 1330204221.

It is not a de Polignac number, because 1224020331 - 2³ = 1224020323 is a prime.

It is a super-2 number, since 2×1224020331² = 2996451541402699122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1224020351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17296 + ... + 52413.

Almost surely, 2^1224020331 is an apocalyptic number.

1224020331 is a deficient number, since it is larger than the sum of its proper divisors (544940629).

1224020331 is a wasteful number, since it uses less digits than its factorization.

1224020331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71666 (or 71663 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1224020331 is about 34986.0019293431. The cubic root of 1224020331 is about 1069.7021708715.

Adding to 1224020331 its reverse (1330204221), we get a palindrome (2554224552).

The spelling of 1224020331 in words is "one billion, two hundred twenty-four million, twenty thousand, three hundred thirty-one".