143811 has 18 divisors (see below), whose sum is σ = 226460. Its totient is φ = 87696.

The previous prime is 143807. The next prime is 143813. The reversal of 143811 is 118341.

143811 is nontrivially palindromic in base 14.

It is not a de Polignac number, because 143811 - 2² = 143807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143813) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4945 + ... + 4973.

2¹⁴³⁸¹¹ is an apocalyptic number.

143811 is a deficient number, since it is larger than the sum of its proper divisors (82649).

143811 is a wasteful number, since it uses less digits than its factorization.

143811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 51 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 143811 is about 379.2242080880. The cubic root of 143811 is about 52.3918863571.

The spelling of 143811 in words is "one hundred forty-three thousand, eight hundred eleven".