131201132020 has 48 divisors (see below), whose sum is σ = 315283086720. Its totient is φ = 44926049664.

The previous prime is 131201131991. The next prime is 131201132039. The reversal of 131201132020 is 20231102131.

It is a junction number, because it is equal to n+sod(n) for n = 131201131985 and 131201132003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 485215 + ... + 705574.

It is an arithmetic number, because the mean of its divisors is an integer number (6568397640).

Almost surely, 2^131201132020 is an apocalyptic number.

131201132020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131201132020 is an abundant number, since it is smaller than the sum of its proper divisors (184081954700).

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

131201132020 is a wasteful number, since it uses less digits than its factorization.

131201132020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191592 (or 1191590 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 131201132020 its reverse (20231102131), we get a palindrome (151432234151).

The spelling of 131201132020 in words is "one hundred thirty-one billion, two hundred one million, one hundred thirty-two thousand, twenty".