1143242312 has 16 divisors (see below), whose sum is σ = 2256399600. Its totient is φ = 541535760.

The previous prime is 1143242311. The next prime is 1143242329. The reversal of 1143242312 is 2132423411.

It is a super-3 number, since 3×1143242312³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1143242311) 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, 3760514 + ... + 3760817.

It is an arithmetic number, because the mean of its divisors is an integer number (141024975).

Almost surely, 2^1143242312 is an apocalyptic number.

It is an amenable number.

1143242312 is a deficient number, since it is larger than the sum of its proper divisors (1113157288).

1143242312 is a wasteful number, since it uses less digits than its factorization.

1143242312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7521356 (or 7521352 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 1143242312 is about 33811.8664376872. The cubic root of 1143242312 is about 1045.6333582606.

Adding to 1143242312 its reverse (2132423411), we get a palindrome (3275665723).

The spelling of 1143242312 in words is "one billion, one hundred forty-three million, two hundred forty-two thousand, three hundred twelve".