20113430432 has 24 divisors (see below), whose sum is σ = 39607245216. Its totient is φ = 10054447552.

The previous prime is 20113430431. The next prime is 20113430437. The reversal of 20113430432 is 23403431102.

It is a junction number, because it is equal to n+sod(n) for n = 20113430398 and 20113430407.

It is not an unprimeable number, because it can be changed into a prime (20113430431) 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, 78083 + ... + 215229.

It is an arithmetic number, because the mean of its divisors is an integer number (1650301884).

Almost surely, 2^20113430432 is an apocalyptic number.

It is an amenable number.

20113430432 is a deficient number, since it is larger than the sum of its proper divisors (19493814784).

20113430432 is a wasteful number, since it uses less digits than its factorization.

20113430432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141740 (or 141732 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20113430432 its reverse (23403431102), we get a palindrome (43516861534).

The spelling of 20113430432 in words is "twenty billion, one hundred thirteen million, four hundred thirty thousand, four hundred thirty-two".