131312522 has 32 divisors (see below), whose sum is σ = 235379520. Its totient is φ = 54234880.

The previous prime is 131312521. The next prime is 131312527. The reversal of 131312522 is 225213131.

It is a junction number, because it is equal to n+sod(n) for n = 131312494 and 131312503.

It is not an unprimeable number, because it can be changed into a prime (131312521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4793 + ... + 16899.

It is an arithmetic number, because the mean of its divisors is an integer number (7355610).

Almost surely, 2^131312522 is an apocalyptic number.

131312522 is a deficient number, since it is larger than the sum of its proper divisors (104066998).

131312522 is a wasteful number, since it uses less digits than its factorization.

131312522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12166.

The product of its digits is 360, while the sum is 20.

The square root of 131312522 is about 11459.1675962960. The cubic root of 131312522 is about 508.2788603697.

Adding to 131312522 its reverse (225213131), we get a palindrome (356525653).

The spelling of 131312522 in words is "one hundred thirty-one million, three hundred twelve thousand, five hundred twenty-two".