20340431324 has 6 divisors (see below), whose sum is σ = 35595754824. Its totient is φ = 10170215660.

The previous prime is 20340431311. The next prime is 20340431329. The reversal of 20340431324 is 42313404302.

It is a junction number, because it is equal to n+sod(n) for n = 20340431293 and 20340431302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340431329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2542553912 + ... + 2542553919.

It is an arithmetic number, because the mean of its divisors is an integer number (5932625804).

Almost surely, 2^20340431324 is an apocalyptic number.

It is an amenable number.

20340431324 is a deficient number, since it is larger than the sum of its proper divisors (15255323500).

20340431324 is a wasteful number, since it uses less digits than its factorization.

20340431324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5085107835 (or 5085107833 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 20340431324 its reverse (42313404302), we get a palindrome (62653835626).

The spelling of 20340431324 in words is "twenty billion, three hundred forty million, four hundred thirty-one thousand, three hundred twenty-four".