20340431030 has 16 divisors (see below), whose sum is σ = 36661155120. Its totient is φ = 8125421472.

The previous prime is 20340431003. The next prime is 20340431077. The reversal of 20340431030 is 3013404302.

It is a junction number, because it is equal to n+sod(n) for n = 20340430993 and 20340431011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1335920 + ... + 1351059.

It is an arithmetic number, because the mean of its divisors is an integer number (2291322195).

Almost surely, 2^20340431030 is an apocalyptic number.

20340431030 is a deficient number, since it is larger than the sum of its proper divisors (16320724090).

20340431030 is a wasteful number, since it uses less digits than its factorization.

20340431030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2687743.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20340431030 its reverse (3013404302), we get a palindrome (23353835332).

The spelling of 20340431030 in words is "twenty billion, three hundred forty million, four hundred thirty-one thousand, thirty".