20131340302 has 16 divisors (see below), whose sum is σ = 30478799232. Its totient is φ = 9971825920.

The previous prime is 20131340291. The next prime is 20131340309. The reversal of 20131340302 is 20304313102.

It is a self number, because there is not a number n which added to its sum of digits gives 20131340302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131340309) 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 7 ways as a sum of consecutive naturals, for example, 478602 + ... + 518962.

It is an arithmetic number, because the mean of its divisors is an integer number (1904924952).

Almost surely, 2^20131340302 is an apocalyptic number.

20131340302 is a deficient number, since it is larger than the sum of its proper divisors (10347458930).

20131340302 is a wasteful number, since it uses less digits than its factorization.

20131340302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42683.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20131340302 its reverse (20304313102), we get a palindrome (40435653404).

The spelling of 20131340302 in words is "twenty billion, one hundred thirty-one million, three hundred forty thousand, three hundred two".