131522101 has 2 divisors, whose sum is σ = 131522102. Its totient is φ = 131522100.

The previous prime is 131522077. The next prime is 131522107. The reversal of 131522101 is 101225131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126023076 + 5499025 = 11226^2 + 2345^2 .

It is a cyclic number.

It is not a de Polignac number, because 131522101 - 2¹⁵ = 131489333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131522107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65761050 + 65761051.

It is an arithmetic number, because the mean of its divisors is an integer number (65761051).

Almost surely, 2^131522101 is an apocalyptic number.

It is an amenable number.

131522101 is a deficient number, since it is larger than the sum of its proper divisors (1).

131522101 is an equidigital number, since it uses as much as digits as its factorization.

131522101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 131522101 is about 11468.3085500871. The cubic root of 131522101 is about 508.5491264282.

Adding to 131522101 its reverse (101225131), we get a palindrome (232747232).

The spelling of 131522101 in words is "one hundred thirty-one million, five hundred twenty-two thousand, one hundred one".