20000131431120 has 160 divisors (see below), whose sum is σ = 68985159667200. Its totient is φ = 5325950209536.

The previous prime is 20000131431089. The next prime is 20000131431149. The reversal of 20000131431120 is 2113413100002.

20000131431120 is a `hidden beast` number, since 20 + 0 + 0 + 0 + 1 + 314 + 311 + 20 = 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 = 20000131431093 and 20000131431102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4885987 + ... + 7992066.

It is an arithmetic number, because the mean of its divisors is an integer number (431157247920).

Almost surely, 2^{20000131431120} is an apocalyptic number.

20000131431120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000131431120 is an abundant number, since it is smaller than the sum of its proper divisors (48985028236080).

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

20000131431120 is a wasteful number, since it uses less digits than its factorization.

20000131431120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12878794 (or 12878782 counting only the distinct ones).

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

Adding to 20000131431120 its reverse (2113413100002), we get a palindrome (22113544531122).

The spelling of 20000131431120 in words is "twenty trillion, one hundred thirty-one million, four hundred thirty-one thousand, one hundred twenty".