20112132231 has 6 divisors (see below), whose sum is σ = 29050857680. Its totient is φ = 13408088148.

The previous prime is 20112132211. The next prime is 20112132239. The reversal of 20112132231 is 13223121102.

It is not a de Polignac number, because 20112132231 - 2⁵ = 20112132199 is a prime.

It is a super-2 number, since 2×20112132231² (a number of 21 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 (20112132239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1117340671 + ... + 1117340688.

Almost surely, 2^20112132231 is an apocalyptic number.

20112132231 is a deficient number, since it is larger than the sum of its proper divisors (8938725449).

20112132231 is a wasteful number, since it uses less digits than its factorization.

20112132231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234681365 (or 2234681362 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20112132231 its reverse (13223121102), we get a palindrome (33335253333).

The spelling of 20112132231 in words is "twenty billion, one hundred twelve million, one hundred thirty-two thousand, two hundred thirty-one".