2142100231 has 4 divisors (see below), whose sum is σ = 2142195264. Its totient is φ = 2142005200.

The previous prime is 2142100229. The next prime is 2142100253. The reversal of 2142100231 is 1320012412.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2142100231 - 2¹ = 2142100229 is a prime.

It is a super-2 number, since 2×2142100231² = 9177186799300506722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142100211) 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, 7626 + ... + 65896.

It is an arithmetic number, because the mean of its divisors is an integer number (535548816).

Almost surely, 2^2142100231 is an apocalyptic number.

2142100231 is a deficient number, since it is larger than the sum of its proper divisors (95033).

2142100231 is an equidigital number, since it uses as much as digits as its factorization.

2142100231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95032.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2142100231 is about 46282.8286840811. The cubic root of 2142100231 is about 1289.0801749606.

Adding to 2142100231 its reverse (1320012412), we get a palindrome (3462112643).

The spelling of 2142100231 in words is "two billion, one hundred forty-two million, one hundred thousand, two hundred thirty-one".