131120749 has 2 divisors, whose sum is σ = 131120750. Its totient is φ = 131120748.

The previous prime is 131120719. The next prime is 131120831. The reversal of 131120749 is 947021131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114105124 + 17015625 = 10682^2 + 4125^2 .

It is a cyclic number.

It is not a de Polignac number, because 131120749 - 2⁹ = 131120237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131120719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65560374 + 65560375.

It is an arithmetic number, because the mean of its divisors is an integer number (65560375).

Almost surely, 2^131120749 is an apocalyptic number.

It is an amenable number.

131120749 is a deficient number, since it is larger than the sum of its proper divisors (1).

131120749 is an equidigital number, since it uses as much as digits as its factorization.

131120749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 131120749 is about 11450.7968718339. The cubic root of 131120749 is about 508.0313042585.

The spelling of 131120749 in words is "one hundred thirty-one million, one hundred twenty thousand, seven hundred forty-nine".