20323312504 has 16 divisors (see below), whose sum is σ = 41570412120. Its totient is φ = 9237869280.

The previous prime is 20323312489. The next prime is 20323312519. The reversal of 20323312504 is 40521332302.

It is an interprime number because it is at equal distance from previous prime (20323312489) and next prime (20323312519).

It is a super-2 number, since 2×20323312504² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 115473279 + ... + 115473454.

Almost surely, 2^20323312504 is an apocalyptic number.

It is an amenable number.

20323312504 is an abundant number, since it is smaller than the sum of its proper divisors (21247099616).

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

20323312504 is a wasteful number, since it uses less digits than its factorization.

20323312504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230946750 (or 230946746 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 20323312504 its reverse (40521332302), we get a palindrome (60844644806).

The spelling of 20323312504 in words is "twenty billion, three hundred twenty-three million, three hundred twelve thousand, five hundred four".