20340432203 has 12 divisors (see below), whose sum is σ = 25171931088. Its totient is φ = 16093527840.

The previous prime is 20340432181. The next prime is 20340432239. The reversal of 20340432203 is 30223404302.

It is not a de Polignac number, because 20340432203 - 2²² = 20336237899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20340432253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8595788 + ... + 8598153.

It is an arithmetic number, because the mean of its divisors is an integer number (2097660924).

Almost surely, 2^20340432203 is an apocalyptic number.

20340432203 is a deficient number, since it is larger than the sum of its proper divisors (4831498885).

20340432203 is a wasteful number, since it uses less digits than its factorization.

20340432203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17193974 (or 17193961 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 23.

Adding to 20340432203 its reverse (30223404302), we get a palindrome (50563836505).

The spelling of 20340432203 in words is "twenty billion, three hundred forty million, four hundred thirty-two thousand, two hundred three".