20123040040231 has 8 divisors (see below), whose sum is σ = 20288414242064. Its totient is φ = 19958295836160.

The previous prime is 20123040040223. The next prime is 20123040040309. The reversal of 20123040040231 is 13204004032102.

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 20123040040231 - 2³ = 20123040040223 is a prime.

It is a super-2 number, since 2×20123040040231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123040046231) 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, 157435296 + ... + 157563061.

It is an arithmetic number, because the mean of its divisors is an integer number (2536051780258).

Almost surely, 2^{20123040040231} is an apocalyptic number.

20123040040231 is a deficient number, since it is larger than the sum of its proper divisors (165374201833).

20123040040231 is a wasteful number, since it uses less digits than its factorization.

20123040040231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314998881.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20123040040231 its reverse (13204004032102), we get a palindrome (33327044072333).

The spelling of 20123040040231 in words is "twenty trillion, one hundred twenty-three billion, forty million, forty thousand, two hundred thirty-one".