131111103522 has 32 divisors (see below), whose sum is σ = 303787769472. Its totient is φ = 36947159424.

The previous prime is 131111103499. The next prime is 131111103523. The reversal of 131111103522 is 225301111131.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (131111103523) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 21378393 + ... + 21384524.

It is an arithmetic number, because the mean of its divisors is an integer number (9493367796).

Almost surely, 2^131111103522 is an apocalyptic number.

131111103522 is an abundant number, since it is smaller than the sum of its proper divisors (172676665950).

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

131111103522 is a wasteful number, since it uses less digits than its factorization.

131111103522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42763002.

The product of its (nonzero) digits is 180, while the sum is 21.

Adding to 131111103522 its reverse (225301111131), we get a palindrome (356412214653).

The spelling of 131111103522 in words is "one hundred thirty-one billion, one hundred eleven million, one hundred three thousand, five hundred twenty-two".