2143011423 has 24 divisors (see below), whose sum is σ = 3346196400. Its totient is φ = 1216346880.

The previous prime is 2143011421. The next prime is 2143011457. The reversal of 2143011423 is 3241103412.

It is not a de Polignac number, because 2143011423 - 2¹ = 2143011421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 2143011423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143011421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27018 + ... + 70823.

It is an arithmetic number, because the mean of its divisors is an integer number (139424850).

Almost surely, 2^2143011423 is an apocalyptic number.

2143011423 is a deficient number, since it is larger than the sum of its proper divisors (1203184977).

2143011423 is a wasteful number, since it uses less digits than its factorization.

2143011423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98007 (or 98000 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2143011423 is about 46292.6713746355. The cubic root of 2143011423 is about 1289.2629290972.

Adding to 2143011423 its reverse (3241103412), we get a palindrome (5384114835).

The spelling of 2143011423 in words is "two billion, one hundred forty-three million, eleven thousand, four hundred twenty-three".