1143223512 has 64 divisors (see below), whose sum is σ = 2907122400. Its totient is φ = 374584320.

The previous prime is 1143223481. The next prime is 1143223517. The reversal of 1143223512 is 2153223411.

It is a super-2 number, since 2×1143223512² = 2613919996779228288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143223517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385138 + ... + 388094.

Almost surely, 2^1143223512 is an apocalyptic number.

1143223512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1143223512 is an abundant number, since it is smaller than the sum of its proper divisors (1763898888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143223512 is a wasteful number, since it uses less digits than its factorization.

1143223512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236 (or 3232 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 1143223512 is about 33811.5884276382. The cubic root of 1143223512 is about 1045.6276266046.

Adding to 1143223512 its reverse (2153223411), we get a palindrome (3296446923).

The spelling of 1143223512 in words is "one billion, one hundred forty-three million, two hundred twenty-three thousand, five hundred twelve".