2171384297 has 2 divisors, whose sum is σ = 2171384298. Its totient is φ = 2171384296.

The previous prime is 2171384263. The next prime is 2171384311. The reversal of 2171384297 is 7924831712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1679032576 + 492351721 = 40976^2 + 22189^2 .

It is a cyclic number.

It is not a de Polignac number, because 2171384297 - 2¹² = 2171380201 is a prime.

It is not a weakly prime, because it can be changed into another prime (2171384597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085692148 + 1085692149.

It is an arithmetic number, because the mean of its divisors is an integer number (1085692149).

Almost surely, 2^2171384297 is an apocalyptic number.

It is an amenable number.

2171384297 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171384297 is an equidigital number, since it uses as much as digits as its factorization.

2171384297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 44.

The square root of 2171384297 is about 46598.1147365427. The cubic root of 2171384297 is about 1294.9278288963.

The spelling of 2171384297 in words is "two billion, one hundred seventy-one million, three hundred eighty-four thousand, two hundred ninety-seven".