131020201044 has 36 divisors (see below), whose sum is σ = 338236551744. Its totient is φ = 42744178512.

The previous prime is 131020201027. The next prime is 131020201057. The reversal of 131020201044 is 440102020131.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×131020201044² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38715862 + ... + 38719245.

Almost surely, 2^131020201044 is an apocalyptic number.

It is an amenable number.

131020201044 is an abundant number, since it is smaller than the sum of its proper divisors (207216350700).

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

131020201044 is a wasteful number, since it uses less digits than its factorization.

131020201044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77435164 (or 77435159 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 131020201044 its reverse (440102020131), we get a palindrome (571122221175).

The spelling of 131020201044 in words is "one hundred thirty-one billion, twenty million, two hundred one thousand, forty-four".