2173523971 has 2 divisors, whose sum is σ = 2173523972. Its totient is φ = 2173523970.

The previous prime is 2173523927. The next prime is 2173524013. The reversal of 2173523971 is 1793253712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2173523971 - 2¹⁷ = 2173392899 is a prime.

It is not a weakly prime, because it can be changed into another prime (2173523921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086761985 + 1086761986.

It is an arithmetic number, because the mean of its divisors is an integer number (1086761986).

Almost surely, 2^2173523971 is an apocalyptic number.

2173523971 is a deficient number, since it is larger than the sum of its proper divisors (1).

2173523971 is an equidigital number, since it uses as much as digits as its factorization.

2173523971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 40.

The square root of 2173523971 is about 46621.0678878123. The cubic root of 2173523971 is about 1295.3530282837.

The spelling of 2173523971 in words is "two billion, one hundred seventy-three million, five hundred twenty-three thousand, nine hundred seventy-one".