20343032340 has 48 divisors (see below), whose sum is σ = 57170722560. Its totient is φ = 5404786560.

The previous prime is 20343032329. The next prime is 20343032363. The reversal of 20343032340 is 4323034302.

It is a self number, because there is not a number n which added to its sum of digits gives 20343032340.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 609295 + ... + 641814.

It is an arithmetic number, because the mean of its divisors is an integer number (1191056720).

Almost surely, 2^20343032340 is an apocalyptic number.

20343032340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20343032340 is an abundant number, since it is smaller than the sum of its proper divisors (36827690220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20343032340 is a wasteful number, since it uses less digits than its factorization.

20343032340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251392 (or 1251390 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 24.

Adding to 20343032340 its reverse (4323034302), we get a palindrome (24666066642).

The spelling of 20343032340 in words is "twenty billion, three hundred forty-three million, thirty-two thousand, three hundred forty".