2140231 has 2 divisors, whose sum is σ = 2140232. Its totient is φ = 2140230.

The previous prime is 2140223. The next prime is 2140253. The reversal of 2140231 is 1320412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2140231 - 2³ = 2140223 is a prime.

It is a super-2 number, since 2×2140231² = 9161177466722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2140531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070115 + 1070116.

It is an arithmetic number, because the mean of its divisors is an integer number (1070116).

2^2140231 is an apocalyptic number.

2140231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140231 is an equidigital number, since it uses as much as digits as its factorization.

2140231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2140231 is about 1462.9528358768. The cubic root of 2140231 is about 128.8705108501.

Adding to 2140231 its reverse (1320412), we get a palindrome (3460643).

The spelling of 2140231 in words is "two million, one hundred forty thousand, two hundred thirty-one".