23181834142 has 4 divisors (see below), whose sum is σ = 34772751216. Its totient is φ = 11590917070.

The previous prime is 23181834133. The next prime is 23181834161. The reversal of 23181834142 is 24143818132.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5795458534 + ... + 5795458537.

It is an arithmetic number, because the mean of its divisors is an integer number (8693187804).

Almost surely, 2^23181834142 is an apocalyptic number.

23181834142 is a deficient number, since it is larger than the sum of its proper divisors (11590917074).

23181834142 is a wasteful number, since it uses less digits than its factorization.

23181834142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11590917073.

The product of its digits is 36864, while the sum is 37.

The spelling of 23181834142 in words is "twenty-three billion, one hundred eighty-one million, eight hundred thirty-four thousand, one hundred forty-two".