219135331 has 2 divisors, whose sum is σ = 219135332. Its totient is φ = 219135330.

The previous prime is 219135289. The next prime is 219135347. The reversal of 219135331 is 133531912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 219135331 - 2¹¹ = 219133283 is a prime.

It is a super-2 number, since 2×219135331² = 96040586584959122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 219135331.

It is not a weakly prime, because it can be changed into another prime (219135361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109567665 + 109567666.

It is an arithmetic number, because the mean of its divisors is an integer number (109567666).

Almost surely, 2^219135331 is an apocalyptic number.

219135331 is a deficient number, since it is larger than the sum of its proper divisors (1).

219135331 is an equidigital number, since it uses as much as digits as its factorization.

219135331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2430, while the sum is 28.

The square root of 219135331 is about 14803.2202915447. The cubic root of 219135331 is about 602.8891499503.

The spelling of 219135331 in words is "two hundred nineteen million, one hundred thirty-five thousand, three hundred thirty-one".