20012233231 has 8 divisors (see below), whose sum is σ = 21010446720. Its totient is φ = 19024696152.

The previous prime is 20012233193. The next prime is 20012233279. The reversal of 20012233231 is 13233221002.

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 20012233231 - 2⁹ = 20012232719 is a prime.

It is a super-2 number, since 2×20012233231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20012233199 and 20012233208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012213231) 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, 2665261 + ... + 2672758.

It is an arithmetic number, because the mean of its divisors is an integer number (2626305840).

Almost surely, 2^20012233231 is an apocalyptic number.

20012233231 is a deficient number, since it is larger than the sum of its proper divisors (998213489).

20012233231 is a wasteful number, since it uses less digits than its factorization.

20012233231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5338205.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20012233231 its reverse (13233221002), we get a palindrome (33245454233).

The spelling of 20012233231 in words is "twenty billion, twelve million, two hundred thirty-three thousand, two hundred thirty-one".