131145522 has 16 divisors (see below), whose sum is σ = 265884960. Its totient is φ = 43116192.

The previous prime is 131145473. The next prime is 131145523. The reversal of 131145522 is 225541131.

It is a happy number.

131145522 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 131145492 and 131145501.

It is not an unprimeable number, because it can be changed into a prime (131145523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149272 + ... + 150147.

It is an arithmetic number, because the mean of its divisors is an integer number (16617810).

Almost surely, 2^131145522 is an apocalyptic number.

131145522 is an abundant number, since it is smaller than the sum of its proper divisors (134739438).

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

131145522 is a wasteful number, since it uses less digits than its factorization.

131145522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299497.

The product of its digits is 1200, while the sum is 24.

The square root of 131145522 is about 11451.8785358560. The cubic root of 131145522 is about 508.0632968228.

Adding to 131145522 its reverse (225541131), we get a palindrome (356686653).

The spelling of 131145522 in words is "one hundred thirty-one million, one hundred forty-five thousand, five hundred twenty-two".