623143 has 4 divisors (see below), whose sum is σ = 655960. Its totient is φ = 590328.

The previous prime is 623107. The next prime is 623171. The reversal of 623143 is 341326.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-623143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 32797 = 623143 / (6 + 2 + 3 + 1 + 4 + 3).

It is a Duffinian number.

623143 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 623143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623743) 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, 16380 + ... + 16417.

It is an arithmetic number, because the mean of its divisors is an integer number (163990).

2⁶²³¹⁴³ is an apocalyptic number.

623143 is a deficient number, since it is larger than the sum of its proper divisors (32817).

623143 is a wasteful number, since it uses less digits than its factorization.

623143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32816.

The product of its digits is 432, while the sum is 19.

The square root of 623143 is about 789.3940714244. The cubic root of 623143 is about 85.4140353211.

Adding to 623143 its reverse (341326), we get a palindrome (964469).

The spelling of 623143 in words is "six hundred twenty-three thousand, one hundred forty-three".