20430411231 has 16 divisors (see below), whose sum is σ = 28565912160. Its totient is φ = 12970460160.

The previous prime is 20430411223. The next prime is 20430411251. The reversal of 20430411231 is 13211403402.

It is not a de Polignac number, because 20430411231 - 2³ = 20430411223 is a prime.

It is a super-2 number, since 2×20430411231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20430411198 and 20430411207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430411251) 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, 1602090 + ... + 1614791.

It is an arithmetic number, because the mean of its divisors is an integer number (1785369510).

Almost surely, 2^20430411231 is an apocalyptic number.

20430411231 is a deficient number, since it is larger than the sum of its proper divisors (8135500929).

20430411231 is a wasteful number, since it uses less digits than its factorization.

20430411231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3216986.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20430411231 its reverse (13211403402), we get a palindrome (33641814633).

The spelling of 20430411231 in words is "twenty billion, four hundred thirty million, four hundred eleven thousand, two hundred thirty-one".