181740234343 has 4 divisors (see below), whose sum is σ = 181763192160. Its totient is φ = 181717276528.

The previous prime is 181740234317. The next prime is 181740234409. The reversal of 181740234343 is 343432047181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 343432047181 = 3643 ⋅94271767.

It is a cyclic number.

It is not a de Polignac number, because 181740234343 - 2³⁷ = 44301280871 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 181740234296 and 181740234305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181740234943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11467030 + ... + 11482867.

It is an arithmetic number, because the mean of its divisors is an integer number (45440798040).

Almost surely, 2^181740234343 is an apocalyptic number.

181740234343 is a deficient number, since it is larger than the sum of its proper divisors (22957817).

181740234343 is an equidigital number, since it uses as much as digits as its factorization.

181740234343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22957816.

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 181740234343 in words is "one hundred eighty-one billion, seven hundred forty million, two hundred thirty-four thousand, three hundred forty-three".