20933431036 has 12 divisors (see below), whose sum is σ = 41866862128. Its totient is φ = 8971470432.

The previous prime is 20933431033. The next prime is 20933431037. The reversal of 20933431036 is 63013433902.

20933431036 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20933430992 and 20933431010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20933431031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373811241 + ... + 373811296.

Almost surely, 2^20933431036 is an apocalyptic number.

It is an amenable number.

20933431036 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20933431036 is a wasteful number, since it uses less digits than its factorization.

20933431036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747622548 (or 747622546 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 34.

Adding to 20933431036 its reverse (63013433902), we get a palindrome (83946864938).

The spelling of 20933431036 in words is "twenty billion, nine hundred thirty-three million, four hundred thirty-one thousand, thirty-six".