2142246231 has 8 divisors (see below), whose sum is σ = 3173698160. Its totient is φ = 1428164136.

The previous prime is 2142246193. The next prime is 2142246241. The reversal of 2142246231 is 1326422412.

2142246231 is a `hidden beast` number, since 2 + 1 + 422 + 4 + 6 + 231 = 666.

It is not a de Polignac number, because 2142246231 - 2⁹ = 2142245719 is a prime.

It is a super-2 number, since 2×2142246231² = 9178437828467410722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 79342453 = 2142246231 / (2 + 1 + 4 + 2 + 2 + 4 + 6 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2142246195 and 2142246204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142246241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39671200 + ... + 39671253.

It is an arithmetic number, because the mean of its divisors is an integer number (396712270).

Almost surely, 2^2142246231 is an apocalyptic number.

2142246231 is a deficient number, since it is larger than the sum of its proper divisors (1031451929).

2142246231 is an equidigital number, since it uses as much as digits as its factorization.

2142246231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79342462 (or 79342456 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 2142246231 is about 46284.4059160318. The cubic root of 2142246231 is about 1289.1094610832.

Adding to 2142246231 its reverse (1326422412), we get a palindrome (3468668643).

The spelling of 2142246231 in words is "two billion, one hundred forty-two million, two hundred forty-six thousand, two hundred thirty-one".