1143611 has 6 divisors (see below), whose sum is σ = 1330380. Its totient is φ = 980196.

The previous prime is 1143601. The next prime is 1143619. The reversal of 1143611 is 1163411.

It is not a de Polignac number, because 1143611 - 2¹⁴ = 1127227 is a prime.

It is a super-2 number, since 2×1143611² = 2615692238642, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1143611.

It is not an unprimeable number, because it can be changed into a prime (1143619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11621 + ... + 11718.

It is an arithmetic number, because the mean of its divisors is an integer number (221730).

2^1143611 is an apocalyptic number.

1143611 is a deficient number, since it is larger than the sum of its proper divisors (186769).

1143611 is an equidigital number, since it uses as much as digits as its factorization.

1143611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23353 (or 23346 counting only the distinct ones).

The product of its digits is 72, while the sum is 17.

The square root of 1143611 is about 1069.3974939189. The cubic root of 1143611 is about 104.5745749435.

The spelling of 1143611 in words is "one million, one hundred forty-three thousand, six hundred eleven".