1423011143 has 4 divisors (see below), whose sum is σ = 1423222248. Its totient is φ = 1422800040.

The previous prime is 1423011113. The next prime is 1423011199. The reversal of 1423011143 is 3411103241.

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-1423011143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423011103) 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, 95096 + ... + 109037.

It is an arithmetic number, because the mean of its divisors is an integer number (355805562).

Almost surely, 2^1423011143 is an apocalyptic number.

1423011143 is a deficient number, since it is larger than the sum of its proper divisors (211105).

1423011143 is an equidigital number, since it uses as much as digits as its factorization.

1423011143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211104.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1423011143 is about 37722.8199237544. The cubic root of 1423011143 is about 1124.7847866181.

Adding to 1423011143 its reverse (3411103241), we get a palindrome (4834114384).

The spelling of 1423011143 in words is "one billion, four hundred twenty-three million, eleven thousand, one hundred forty-three".