2171063431 has 2 divisors, whose sum is σ = 2171063432. Its totient is φ = 2171063430.

The previous prime is 2171063429. The next prime is 2171063471. The reversal of 2171063431 is 1343601712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2171063431 - 2¹ = 2171063429 is a prime.

It is a super-2 number, since 2×2171063431² = 9427032842850983522, which contains 22 as substring.

Together with 2171063429, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2171063431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2171063471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085531715 + 1085531716.

It is an arithmetic number, because the mean of its divisors is an integer number (1085531716).

Almost surely, 2^2171063431 is an apocalyptic number.

2171063431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171063431 is an equidigital number, since it uses as much as digits as its factorization.

2171063431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 2171063431 is about 46594.6717018159. The cubic root of 2171063431 is about 1294.8640418180.

The spelling of 2171063431 in words is "two billion, one hundred seventy-one million, sixty-three thousand, four hundred thirty-one".