4271891231 has 2 divisors, whose sum is σ = 4271891232. Its totient is φ = 4271891230.

The previous prime is 4271891209. The next prime is 4271891251. The reversal of 4271891231 is 1321981724.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4271891231 is a prime.

It is a super-2 number, since 2×4271891231² = 36498109378989390722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4271891251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2135945615 + 2135945616.

It is an arithmetic number, because the mean of its divisors is an integer number (2135945616).

Almost surely, 2^4271891231 is an apocalyptic number.

4271891231 is a deficient number, since it is larger than the sum of its proper divisors (1).

4271891231 is an equidigital number, since it uses as much as digits as its factorization.

4271891231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 4271891231 is about 65359.7064788391. The cubic root of 4271891231 is about 1622.5822799467.

The spelling of 4271891231 in words is "four billion, two hundred seventy-one million, eight hundred ninety-one thousand, two hundred thirty-one".