1143213513 has 24 divisors (see below), whose sum is σ = 1652867712. Its totient is φ = 702531648.

The previous prime is 1143213497. The next prime is 1143213521. The reversal of 1143213513 is 3153123411.

It is not a de Polignac number, because 1143213513 - 2⁴ = 1143213497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1143213613) 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 23 ways as a sum of consecutive naturals, for example, 553120 + ... + 555182.

It is an arithmetic number, because the mean of its divisors is an integer number (68869488).

Almost surely, 2^1143213513 is an apocalyptic number.

1143213513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1143213513 is a deficient number, since it is larger than the sum of its proper divisors (509654199).

1143213513 is a wasteful number, since it uses less digits than its factorization.

1143213513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3185 (or 3172 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 1143213513 is about 33811.4405638092. The cubic root of 1143213513 is about 1045.6245781307.

Adding to 1143213513 its reverse (3153123411), we get a palindrome (4296336924).

The spelling of 1143213513 in words is "one billion, one hundred forty-three million, two hundred thirteen thousand, five hundred thirteen".