20123340302 has 24 divisors (see below), whose sum is σ = 32600177064. Its totient is φ = 9261130464.

The previous prime is 20123340301. The next prime is 20123340353. The reversal of 20123340302 is 20304332102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123340301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3614573 + ... + 3620135.

It is an arithmetic number, because the mean of its divisors is an integer number (1358340711).

Almost surely, 2^20123340302 is an apocalyptic number.

20123340302 is a deficient number, since it is larger than the sum of its proper divisors (12476836762).

20123340302 is an equidigital number, since it uses as much as digits as its factorization.

20123340302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6324 (or 5951 counting only the distinct ones).

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

Adding to 20123340302 its reverse (20304332102), we get a palindrome (40427672404).

The spelling of 20123340302 in words is "twenty billion, one hundred twenty-three million, three hundred forty thousand, three hundred two".