194142311 has 4 divisors (see below), whose sum is σ = 211791624. Its totient is φ = 176493000.

The previous prime is 194142281. The next prime is 194142341. The reversal of 194142311 is 113241491.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (194142281) and next prime (194142341).

It is a cyclic number.

It is not a de Polignac number, because 194142311 - 2²⁶ = 127033447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194142341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8824640 + ... + 8824661.

It is an arithmetic number, because the mean of its divisors is an integer number (52947906).

Almost surely, 2^194142311 is an apocalyptic number.

194142311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

194142311 is a deficient number, since it is larger than the sum of its proper divisors (17649313).

194142311 is a wasteful number, since it uses less digits than its factorization.

194142311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17649312.

The product of its digits is 864, while the sum is 26.

The square root of 194142311 is about 13933.4960078223. The cubic root of 194142311 is about 579.0375546251.

The spelling of 194142311 in words is "one hundred ninety-four million, one hundred forty-two thousand, three hundred eleven".