131522164 has 6 divisors (see below), whose sum is σ = 230163794. Its totient is φ = 65761080.

The previous prime is 131522159. The next prime is 131522191. The reversal of 131522164 is 461225131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 72386064 + 59136100 = 8508^2 + 7690^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16440267 + ... + 16440274.

Almost surely, 2^131522164 is an apocalyptic number.

It is an amenable number.

131522164 is a deficient number, since it is larger than the sum of its proper divisors (98641630).

131522164 is a wasteful number, since it uses less digits than its factorization.

131522164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32880545 (or 32880543 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 131522164 is about 11468.3112967865. The cubic root of 131522164 is about 508.5492076277.

Adding to 131522164 its reverse (461225131), we get a palindrome (592747295).

The spelling of 131522164 in words is "one hundred thirty-one million, five hundred twenty-two thousand, one hundred sixty-four".