1143213 has 4 divisors (see below), whose sum is σ = 1524288. Its totient is φ = 762140.

The previous prime is 1143193. The next prime is 1143217. The reversal of 1143213 is 3123411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3123411 = 3 ⋅1041137.

It is a cyclic number.

It is not a de Polignac number, because 1143213 - 2¹³ = 1135021 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 1143192 and 1143201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143217) 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 3 ways as a sum of consecutive naturals, for example, 190533 + ... + 190538.

It is an arithmetic number, because the mean of its divisors is an integer number (381072).

2^1143213 is an apocalyptic number.

It is an amenable number.

1143213 is a deficient number, since it is larger than the sum of its proper divisors (381075).

1143213 is an equidigital number, since it uses as much as digits as its factorization.

1143213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381074.

The product of its digits is 72, while the sum is 15.

The square root of 1143213 is about 1069.2113916340. The cubic root of 1143213 is about 104.5624421728.

Adding to 1143213 its reverse (3123411), we get a palindrome (4266624).

The spelling of 1143213 in words is "one million, one hundred forty-three thousand, two hundred thirteen".