131022547 has 2 divisors, whose sum is σ = 131022548. Its totient is φ = 131022546.

The previous prime is 131022503. The next prime is 131022581. The reversal of 131022547 is 745220131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131022547 - 2²³ = 122633939 is a prime.

It is a weakly prime.

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, 65511273 + 65511274.

It is an arithmetic number, because the mean of its divisors is an integer number (65511274).

Almost surely, 2^131022547 is an apocalyptic number.

131022547 is a deficient number, since it is larger than the sum of its proper divisors (1).

131022547 is an equidigital number, since it uses as much as digits as its factorization.

131022547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 131022547 is about 11446.5080701496. The cubic root of 131022547 is about 507.9044437106.

Adding to 131022547 its reverse (745220131), we get a palindrome (876242678).

The spelling of 131022547 in words is "one hundred thirty-one million, twenty-two thousand, five hundred forty-seven".