1143031 has 4 divisors (see below), whose sum is σ = 1192752. Its totient is φ = 1093312.

The previous prime is 1143019. The next prime is 1143047. The reversal of 1143031 is 1303411.

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

It is a cyclic number.

It is not a de Polignac number, because 1143031 - 2¹¹ = 1140983 is a prime.

It is a super-2 number, since 2×1143031² = 2613039733922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143061) 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, 24826 + ... + 24871.

It is an arithmetic number, because the mean of its divisors is an integer number (298188).

2^1143031 is an apocalyptic number.

1143031 is a deficient number, since it is larger than the sum of its proper divisors (49721).

1143031 is an equidigital number, since it uses as much as digits as its factorization.

1143031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49720.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1143031 is about 1069.1262787903. The cubic root of 1143031 is about 104.5568930831.

Adding to 1143031 its reverse (1303411), we get a palindrome (2446442).

The spelling of 1143031 in words is "one million, one hundred forty-three thousand, thirty-one".