20311704000 has 672 divisors, whose sum is σ = 83868475392. Its totient is φ = 4596480000.

The previous prime is 20311703959. The next prime is 20311704019. The reversal of 20311704000 is 40711302.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (18).

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 95 ways as a sum of consecutive naturals, for example, 96263895 + ... + 96264105.

Almost surely, 2^20311704000 is an apocalyptic number.

20311704000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20311704000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41934237696).

20311704000 is an abundant number, since it is smaller than the sum of its proper divisors (63556771392).

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

20311704000 is a wasteful number, since it uses less digits than its factorization.

20311704000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The spelling of 20311704000 in words is "twenty billion, three hundred eleven million, seven hundred four thousand".