1143212340 has 96 divisors (see below), whose sum is σ = 3238341120. Its totient is φ = 301326336.

The previous prime is 1143212333. The next prime is 1143212341. The reversal of 1143212340 is 432123411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143212341) 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, 3114837 + ... + 3115203.

It is an arithmetic number, because the mean of its divisors is an integer number (33732720).

Almost surely, 2^1143212340 is an apocalyptic number.

1143212340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143212340 is an abundant number, since it is smaller than the sum of its proper divisors (2095128780).

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

1143212340 is a wasteful number, since it uses less digits than its factorization.

1143212340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841 (or 839 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1143212340 is about 33811.4232176050. The cubic root of 1143212340 is about 1045.6242205078.

Adding to 1143212340 its reverse (432123411), we get a palindrome (1575335751).

It can be divided in two parts, 1 and 143212340, that added together give a palindrome (143212341).

The spelling of 1143212340 in words is "one billion, one hundred forty-three million, two hundred twelve thousand, three hundred forty".