13131000012420 has 72 divisors (see below), whose sum is σ = 39837450796416. Its totient is φ = 3501006530112.

The previous prime is 13131000012419. The next prime is 13131000012443. The reversal of 13131000012420 is 2421000013131.

13131000012420 is a `hidden beast` number, since 131 + 3 + 100 + 0 + 0 + 12 + 420 = 666.

It is a super-2 number, since 2×13131000012420² (a number of 27 digits) contains 22 as substring.

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 = 13131000012393 and 13131000012402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5116522 + ... + 7241601.

It is an arithmetic number, because the mean of its divisors is an integer number (553297927728).

Almost surely, 2^{13131000012420} is an apocalyptic number.

13131000012420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13131000012420 is an abundant number, since it is smaller than the sum of its proper divisors (26706450783996).

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

13131000012420 is a wasteful number, since it uses less digits than its factorization.

13131000012420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12364041 (or 12364036 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13131000012420 its reverse (2421000013131), we get a palindrome (15552000025551).

The spelling of 13131000012420 in words is "thirteen trillion, one hundred thirty-one billion, twelve thousand, four hundred twenty".