193112813 has 8 divisors (see below), whose sum is σ = 196297728. Its totient is φ = 189942624.

The previous prime is 193112797. The next prime is 193112837. The reversal of 193112813 is 318211391.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 193112813 - 2⁴ = 193112797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193111813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24506 + ... + 31412.

It is an arithmetic number, because the mean of its divisors is an integer number (24537216).

Almost surely, 2^193112813 is an apocalyptic number.

It is an amenable number.

193112813 is a deficient number, since it is larger than the sum of its proper divisors (3184915).

193112813 is an equidigital number, since it uses as much as digits as its factorization.

193112813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7363.

The product of its digits is 1296, while the sum is 29.

The square root of 193112813 is about 13896.5036250130. The cubic root of 193112813 is about 578.0122331914.

The spelling of 193112813 in words is "one hundred ninety-three million, one hundred twelve thousand, eight hundred thirteen".