1143223331 has 16 divisors (see below), whose sum is σ = 1214522400. Its totient is φ = 1073088000.

The previous prime is 1143223313. The next prime is 1143223339. The reversal of 1143223331 is 1333223411.

It is a cyclic number.

It is not a de Polignac number, because 1143223331 - 2⁶ = 1143223267 is a prime.

It is a super-2 number, since 2×1143223331² = 2613919169085471122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1143223297 and 1143223306.

It is not an unprimeable number, because it can be changed into a prime (1143223339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1378625 + ... + 1379453.

It is an arithmetic number, because the mean of its divisors is an integer number (75907650).

Almost surely, 2^1143223331 is an apocalyptic number.

1143223331 is a deficient number, since it is larger than the sum of its proper divisors (71299069).

1143223331 is a wasteful number, since it uses less digits than its factorization.

1143223331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430.

The product of its digits is 1296, while the sum is 23.

The square root of 1143223331 is about 33811.5857510410. The cubic root of 1143223331 is about 1045.6275714219.

Adding to 1143223331 its reverse (1333223411), we get a palindrome (2476446742).

The spelling of 1143223331 in words is "one billion, one hundred forty-three million, two hundred twenty-three thousand, three hundred thirty-one".