12311203320 has 96 divisors (see below), whose sum is σ = 43089228000. Its totient is φ = 3030448896.

The previous prime is 12311203309. The next prime is 12311203357. The reversal of 12311203320 is 2330211321.

12311203320 is a `hidden beast` number, since 1 + 2 + 311 + 20 + 332 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 12311203293 and 12311203302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1310620 + ... + 1319979.

It is an arithmetic number, because the mean of its divisors is an integer number (448846125).

Almost surely, 2^12311203320 is an apocalyptic number.

12311203320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12311203320 is an abundant number, since it is smaller than the sum of its proper divisors (30778024680).

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

12311203320 is a wasteful number, since it uses less digits than its factorization.

12311203320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630629 (or 2630622 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12311203320 its reverse (2330211321), we get a palindrome (14641414641).

The spelling of 12311203320 in words is "twelve billion, three hundred eleven million, two hundred three thousand, three hundred twenty".