20340133430 has 32 divisors (see below), whose sum is σ = 37004239584. Its totient is φ = 8049390336.

The previous prime is 20340133417. The next prime is 20340133439. The reversal of 20340133430 is 3433104302.

It is a junction number, because it is equal to n+sod(n) for n = 20340133396 and 20340133405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340133439) 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, 338009 + ... + 393611.

It is an arithmetic number, because the mean of its divisors is an integer number (1156382487).

Almost surely, 2^20340133430 is an apocalyptic number.

20340133430 is a deficient number, since it is larger than the sum of its proper divisors (16664106154).

20340133430 is a wasteful number, since it uses less digits than its factorization.

20340133430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56000.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 20340133430 its reverse (3433104302), we get a palindrome (23773237732).

The spelling of 20340133430 in words is "twenty billion, three hundred forty million, one hundred thirty-three thousand, four hundred thirty".