5431991843 has 2 divisors, whose sum is σ = 5431991844. Its totient is φ = 5431991842.

The previous prime is 5431991809. The next prime is 5431991849. The reversal of 5431991843 is 3481991345.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5431991843 - 2²⁶ = 5364882979 is a prime.

It is not a weakly prime, because it can be changed into another prime (5431991849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2715995921 + 2715995922.

It is an arithmetic number, because the mean of its divisors is an integer number (2715995922).

Almost surely, 2^5431991843 is an apocalyptic number.

5431991843 is a deficient number, since it is larger than the sum of its proper divisors (1).

5431991843 is an equidigital number, since it uses as much as digits as its factorization.

5431991843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 47.

The square root of 5431991843 is about 73702.0477530984. The cubic root of 5431991843 is about 1757.8684425371.

The spelling of 5431991843 in words is "five billion, four hundred thirty-one million, nine hundred ninety-one thousand, eight hundred forty-three".