131020431322203 has 24 divisors (see below), whose sum is σ = 196266559992048. Its totient is φ = 87344505356544.

The previous prime is 131020431322133. The next prime is 131020431322217. The reversal of 131020431322203 is 302223134020131.

131020431322203 is a `hidden beast` number, since 1 + 3 + 1 + 0 + 2 + 0 + 431 + 3 + 2 + 220 + 3 = 666.

It is not a de Polignac number, because 131020431322203 - 2¹⁶ = 131020431256667 is a prime.

It is a super-2 number, since 2×131020431322203² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (131020431321203) by changing a digit.

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, 1147651 + ... + 16228307.

It is an arithmetic number, because the mean of its divisors is an integer number (8177773333002).

Almost surely, 2^{131020431322203} is an apocalyptic number.

131020431322203 is a deficient number, since it is larger than the sum of its proper divisors (65246128669845).

131020431322203 is an equidigital number, since it uses as much as digits as its factorization.

131020431322203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15116425 (or 15116413 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 131020431322203 its reverse (302223134020131), we get a palindrome (433243565342334).

The spelling of 131020431322203 in words is "one hundred thirty-one trillion, twenty billion, four hundred thirty-one million, three hundred twenty-two thousand, two hundred three".