201642319 has 2 divisors, whose sum is σ = 201642320. Its totient is φ = 201642318.

The previous prime is 201642257. The next prime is 201642323. The reversal of 201642319 is 913246102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201642319 - 2¹⁹ = 201118031 is a prime.

It is a super-2 number, since 2×201642319² = 81319249623395522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201642349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100821159 + 100821160.

It is an arithmetic number, because the mean of its divisors is an integer number (100821160).

Almost surely, 2^201642319 is an apocalyptic number.

201642319 is a deficient number, since it is larger than the sum of its proper divisors (1).

201642319 is an equidigital number, since it uses as much as digits as its factorization.

201642319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 201642319 is about 14200.0816546948. The cubic root of 201642319 is about 586.3999093210.

The spelling of 201642319 in words is "two hundred one million, six hundred forty-two thousand, three hundred nineteen".