2142244231 has 4 divisors (see below), whose sum is σ = 2157656200. Its totient is φ = 2126832264.

The previous prime is 2142244217. The next prime is 2142244261. The reversal of 2142244231 is 1324422412.

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

It is a cyclic number.

It is not a de Polignac number, because 2142244231 - 2⁵ = 2142244199 is a prime.

It is a super-2 number, since 2×2142244231² = 9178420690505562722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2142244196 and 2142244205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142244211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7705776 + ... + 7706053.

It is an arithmetic number, because the mean of its divisors is an integer number (539414050).

Almost surely, 2^2142244231 is an apocalyptic number.

2142244231 is a deficient number, since it is larger than the sum of its proper divisors (15411969).

2142244231 is a wasteful number, since it uses less digits than its factorization.

2142244231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15411968.

The product of its digits is 3072, while the sum is 25.

The square root of 2142244231 is about 46284.3843104778. The cubic root of 2142244231 is about 1289.1090599124.

Adding to 2142244231 its reverse (1324422412), we get a palindrome (3466666643).

The spelling of 2142244231 in words is "two billion, one hundred forty-two million, two hundred forty-four thousand, two hundred thirty-one".