216311153 has 2 divisors, whose sum is σ = 216311154. Its totient is φ = 216311152.

The previous prime is 216311107. The next prime is 216311167. The reversal of 216311153 is 351113612.

216311153 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191877904 + 24433249 = 13852^2 + 4943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216311153 is a prime.

It is not a weakly prime, because it can be changed into another prime (216311453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108155576 + 108155577.

It is an arithmetic number, because the mean of its divisors is an integer number (108155577).

Almost surely, 2^216311153 is an apocalyptic number.

It is an amenable number.

216311153 is a deficient number, since it is larger than the sum of its proper divisors (1).

216311153 is an equidigital number, since it uses as much as digits as its factorization.

216311153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 23.

The square root of 216311153 is about 14707.5202872544. The cubic root of 216311153 is about 600.2879663998.

Adding to 216311153 its reverse (351113612), we get a palindrome (567424765).

The spelling of 216311153 in words is "two hundred sixteen million, three hundred eleven thousand, one hundred fifty-three".