131522357 has 2 divisors, whose sum is σ = 131522358. Its totient is φ = 131522356.

The previous prime is 131522333. The next prime is 131522393. The reversal of 131522357 is 753225131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84750436 + 46771921 = 9206^2 + 6839^2 .

It is an emirp because it is prime and its reverse (753225131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131522357 - 2⁸ = 131522101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131522327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65761178 + 65761179.

It is an arithmetic number, because the mean of its divisors is an integer number (65761179).

Almost surely, 2^131522357 is an apocalyptic number.

It is an amenable number.

131522357 is a deficient number, since it is larger than the sum of its proper divisors (1).

131522357 is an equidigital number, since it uses as much as digits as its factorization.

131522357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 29.

The square root of 131522357 is about 11468.3197112742. The cubic root of 131522357 is about 508.5494563816.

Adding to 131522357 its reverse (753225131), we get a palindrome (884747488).

The spelling of 131522357 in words is "one hundred thirty-one million, five hundred twenty-two thousand, three hundred fifty-seven".