20123022131 has 8 divisors (see below), whose sum is σ = 20786355984. Its totient is φ = 19465976160.

The previous prime is 20123022109. The next prime is 20123022163. The reversal of 20123022131 is 13122032102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20123022131 is a prime.

It is a super-2 number, since 2×20123022131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123022181) 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, 1565465 + ... + 1578266.

It is an arithmetic number, because the mean of its divisors is an integer number (2598294498).

Almost surely, 2^20123022131 is an apocalyptic number.

20123022131 is a deficient number, since it is larger than the sum of its proper divisors (663333853).

20123022131 is a wasteful number, since it uses less digits than its factorization.

20123022131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3143941.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20123022131 its reverse (13122032102), we get a palindrome (33245054233).

The spelling of 20123022131 in words is "twenty billion, one hundred twenty-three million, twenty-two thousand, one hundred thirty-one".