20000435403231 has 6 divisors (see below), whose sum is σ = 28889517804680. Its totient is φ = 13333623602148.

The previous prime is 20000435403229. The next prime is 20000435403269. The reversal of 20000435403231 is 13230453400002.

20000435403231 is a `hidden beast` number, since 20 + 0 + 0 + 0 + 4 + 3 + 5 + 403 + 231 = 666.

It is not a de Polignac number, because 20000435403231 - 2¹ = 20000435403229 is a prime.

It is a super-2 number, since 2×20000435403231² (a number of 27 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 = 20000435403195 and 20000435403204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000435403031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1111135300171 + ... + 1111135300188.

Almost surely, 2^{20000435403231} is an apocalyptic number.

20000435403231 is a deficient number, since it is larger than the sum of its proper divisors (8889082401449).

20000435403231 is a wasteful number, since it uses less digits than its factorization.

20000435403231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222270600365 (or 2222270600362 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 20000435403231 its reverse (13230453400002), we get a palindrome (33230888803233).

The spelling of 20000435403231 in words is "twenty trillion, four hundred thirty-five million, four hundred three thousand, two hundred thirty-one".