131443012402020 has 216 divisors, whose sum is σ = 439679558590272. Its totient is φ = 31761176388480.

The previous prime is 131443012401977. The next prime is 131443012402021. The reversal of 131443012402020 is 20204210344131.

131443012402020 is a `hidden beast` number, since 1 + 3 + 1 + 4 + 430 + 1 + 24 + 0 + 202 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (131443012402021) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3142584 + ... + 16515503.

It is an arithmetic number, because the mean of its divisors is an integer number (2035553511992).

Almost surely, 2^{131443012402020} is an apocalyptic number.

131443012402020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131443012402020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219839779295136).

131443012402020 is an abundant number, since it is smaller than the sum of its proper divisors (308236546188252).

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

131443012402020 is a wasteful number, since it uses less digits than its factorization.

131443012402020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19658431 (or 19658415 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 131443012402020 its reverse (20204210344131), we get a palindrome (151647222746151).

The spelling of 131443012402020 in words is "one hundred thirty-one trillion, four hundred forty-three billion, twelve million, four hundred two thousand, twenty".