131435522 has 4 divisors (see below), whose sum is σ = 197153286. Its totient is φ = 65717760.

The previous prime is 131435489. The next prime is 131435527. The reversal of 131435522 is 225534131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 118178641 + 13256881 = 10871^2 + 3641^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131435491 and 131435500.

It is not an unprimeable number, because it can be changed into a prime (131435527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32858879 + ... + 32858882.

Almost surely, 2^131435522 is an apocalyptic number.

131435522 is a deficient number, since it is larger than the sum of its proper divisors (65717764).

131435522 is an equidigital number, since it uses as much as digits as its factorization.

131435522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65717763.

The product of its digits is 3600, while the sum is 26.

The square root of 131435522 is about 11464.5332220723. The cubic root of 131435522 is about 508.4375118799.

Adding to 131435522 its reverse (225534131), we get a palindrome (356969653).

The spelling of 131435522 in words is "one hundred thirty-one million, four hundred thirty-five thousand, five hundred twenty-two".