1143415213 has 4 divisors (see below), whose sum is σ = 1147317948. Its totient is φ = 1139512480.

The previous prime is 1143415211. The next prime is 1143415237. The reversal of 1143415213 is 3125143411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 844367364 + 299047849 = 29058^2 + 17293^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143415213 - 2¹ = 1143415211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143415211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1950928 + ... + 1951513.

It is an arithmetic number, because the mean of its divisors is an integer number (286829487).

Almost surely, 2^1143415213 is an apocalyptic number.

It is an amenable number.

1143415213 is a deficient number, since it is larger than the sum of its proper divisors (3902735).

1143415213 is an equidigital number, since it uses as much as digits as its factorization.

1143415213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3902734.

The product of its digits is 1440, while the sum is 25.

The square root of 1143415213 is about 33814.4231504842. The cubic root of 1143415213 is about 1045.6860685618.

Adding to 1143415213 its reverse (3125143411), we get a palindrome (4268558624).

The spelling of 1143415213 in words is "one billion, one hundred forty-three million, four hundred fifteen thousand, two hundred thirteen".