1143015223 has 4 divisors (see below), whose sum is σ = 1306303120. Its totient is φ = 979727328.

The previous prime is 1143015221. The next prime is 1143015277. The reversal of 1143015223 is 3225103411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3225103411 = 1019 ⋅3164969.

It is a cyclic number.

It is not a de Polignac number, because 1143015223 - 2¹ = 1143015221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1143015194 and 1143015203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143015221) 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, 81643938 + ... + 81643951.

It is an arithmetic number, because the mean of its divisors is an integer number (326575780).

Almost surely, 2^1143015223 is an apocalyptic number.

1143015223 is a deficient number, since it is larger than the sum of its proper divisors (163287897).

1143015223 is an equidigital number, since it uses as much as digits as its factorization.

1143015223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163287896.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1143015223 is about 33808.5081451400. The cubic root of 1143015223 is about 1045.5641202245.

Adding to 1143015223 its reverse (3225103411), we get a palindrome (4368118634).

The spelling of 1143015223 in words is "one billion, one hundred forty-three million, fifteen thousand, two hundred twenty-three".