20793231181 has 8 divisors (see below), whose sum is σ = 21097931328. Its totient is φ = 20488860000.

The previous prime is 20793231161. The next prime is 20793231211. The reversal of 20793231181 is 18113239702.

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 20793231181 - 2⁹ = 20793230669 is a prime.

It is a super-2 number, since 2×20793231181² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20793231181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20793231161) 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, 46566 + ... + 209176.

It is an arithmetic number, because the mean of its divisors is an integer number (2637241416).

Almost surely, 2^20793231181 is an apocalyptic number.

It is an amenable number.

20793231181 is a deficient number, since it is larger than the sum of its proper divisors (304700147).

20793231181 is a wasteful number, since it uses less digits than its factorization.

20793231181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164483.

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 20793231181 in words is "twenty billion, seven hundred ninety-three million, two hundred thirty-one thousand, one hundred eighty-one".