131125571 has 2 divisors, whose sum is σ = 131125572. Its totient is φ = 131125570.

The previous prime is 131125541. The next prime is 131125591. The reversal of 131125571 is 175521131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131125571 - 2¹⁰ = 131124547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131125571.

It is not a weakly prime, because it can be changed into another prime (131125541) 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, 65562785 + 65562786.

It is an arithmetic number, because the mean of its divisors is an integer number (65562786).

Almost surely, 2^131125571 is an apocalyptic number.

131125571 is a deficient number, since it is larger than the sum of its proper divisors (1).

131125571 is an equidigital number, since it uses as much as digits as its factorization.

131125571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1050, while the sum is 26.

The square root of 131125571 is about 11451.0074229301. The cubic root of 131125571 is about 508.0375318438.

The spelling of 131125571 in words is "one hundred thirty-one million, one hundred twenty-five thousand, five hundred seventy-one".