20311200984 has 16 divisors (see below), whose sum is σ = 50778002520. Its totient is φ = 6770400320.

The previous prime is 20311200983. The next prime is 20311200991. The reversal of 20311200984 is 48900211302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311200983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423149997 + ... + 423150044.

Almost surely, 2^20311200984 is an apocalyptic number.

20311200984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20311200984 is an abundant number, since it is smaller than the sum of its proper divisors (30466801536).

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

20311200984 is a wasteful number, since it uses less digits than its factorization.

20311200984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846300050 (or 846300046 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The spelling of 20311200984 in words is "twenty billion, three hundred eleven million, two hundred thousand, nine hundred eighty-four".