20311203000 has 128 divisors (see below), whose sum is σ = 69132061440. Its totient is φ = 4923920000.

The previous prime is 20311202983. The next prime is 20311203013. The reversal of 20311203000 is 30211302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 274746 + ... + 340745.

It is an arithmetic number, because the mean of its divisors is an integer number (540094230).

Almost surely, 2^20311203000 is an apocalyptic number.

20311203000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20311203000 is an abundant number, since it is smaller than the sum of its proper divisors (48820858440).

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

20311203000 is a wasteful number, since it uses less digits than its factorization.

20311203000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615526 (or 615512 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 20311203000 its reverse (30211302), we get a palindrome (20341414302).

The spelling of 20311203000 in words is "twenty billion, three hundred eleven million, two hundred three thousand".