216161371 has 2 divisors, whose sum is σ = 216161372. Its totient is φ = 216161370.

The previous prime is 216161353. The next prime is 216161377. The reversal of 216161371 is 173161612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216161371 - 2⁹ = 216160859 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (216161377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108080685 + 108080686.

It is an arithmetic number, because the mean of its divisors is an integer number (108080686).

Almost surely, 2^216161371 is an apocalyptic number.

216161371 is a deficient number, since it is larger than the sum of its proper divisors (1).

216161371 is an equidigital number, since it uses as much as digits as its factorization.

216161371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 28.

The square root of 216161371 is about 14702.4273846192. The cubic root of 216161371 is about 600.1493803987.

The spelling of 216161371 in words is "two hundred sixteen million, one hundred sixty-one thousand, three hundred seventy-one".