20311230000 has 100 divisors (see below), whose sum is σ = 65567455448. Its totient is φ = 5416320000.

The previous prime is 20311229947. The next prime is 20311230019. The reversal of 20311230000 is 3211302.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (100).

It is a super-2 number, since 2×20311230000² (a number of 21 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 308521 + ... + 368520.

Almost surely, 2^20311230000 is an apocalyptic number.

20311230000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20311230000 is an abundant number, since it is smaller than the sum of its proper divisors (45256225448).

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

20311230000 is an equidigital number, since it uses as much as digits as its factorization.

20311230000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677072 (or 677051 counting only the distinct ones).

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

Adding to 20311230000 its reverse (3211302), we get a palindrome (20314441302).

The spelling of 20311230000 in words is "twenty billion, three hundred eleven million, two hundred thirty thousand".