131122247 has 2 divisors, whose sum is σ = 131122248. Its totient is φ = 131122246.

The previous prime is 131122181. The next prime is 131122259. The reversal of 131122247 is 742221131.

It is a strong prime.

It is an emirp because it is prime and its reverse (742221131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131122247 - 2¹⁶ = 131056711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131122297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65561123 + 65561124.

It is an arithmetic number, because the mean of its divisors is an integer number (65561124).

Almost surely, 2^131122247 is an apocalyptic number.

131122247 is a deficient number, since it is larger than the sum of its proper divisors (1).

131122247 is an equidigital number, since it uses as much as digits as its factorization.

131122247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 23.

The square root of 131122247 is about 11450.8622819419. The cubic root of 131122247 is about 508.0332389332.

Adding to 131122247 its reverse (742221131), we get a palindrome (873343378).

The spelling of 131122247 in words is "one hundred thirty-one million, one hundred twenty-two thousand, two hundred forty-seven".