20434213004231 has 16 divisors (see below), whose sum is σ = 22317503846400. Its totient is φ = 18595447244640.

The previous prime is 20434213004213. The next prime is 20434213004267. The reversal of 20434213004231 is 13240031243402.

It is a cyclic number.

It is not a de Polignac number, because 20434213004231 - 2⁶ = 20434213004167 is a prime.

It is a super-2 number, since 2×20434213004231² (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 = 20434213004194 and 20434213004203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434213004281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13300376 + ... + 14756978.

It is an arithmetic number, because the mean of its divisors is an integer number (1394843990400).

Almost surely, 2^{20434213004231} is an apocalyptic number.

20434213004231 is a deficient number, since it is larger than the sum of its proper divisors (1883290842169).

20434213004231 is a wasteful number, since it uses less digits than its factorization.

20434213004231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471886.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 20434213004231 its reverse (13240031243402), we get a palindrome (33674244247633).

The spelling of 20434213004231 in words is "twenty trillion, four hundred thirty-four billion, two hundred thirteen million, four thousand, two hundred thirty-one".