2173987223 has 2 divisors, whose sum is σ = 2173987224. Its totient is φ = 2173987222.

The previous prime is 2173987181. The next prime is 2173987229. The reversal of 2173987223 is 3227893712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2173987223 - 2¹² = 2173983127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2173987229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086993611 + 1086993612.

It is an arithmetic number, because the mean of its divisors is an integer number (1086993612).

Almost surely, 2^2173987223 is an apocalyptic number.

2173987223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2173987223 is an equidigital number, since it uses as much as digits as its factorization.

2173987223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 44.

The square root of 2173987223 is about 46626.0358919778. The cubic root of 2173987223 is about 1295.4450496987.

The spelling of 2173987223 in words is "two billion, one hundred seventy-three million, nine hundred eighty-seven thousand, two hundred twenty-three".