130691761 has 2 divisors, whose sum is σ = 130691762. Its totient is φ = 130691760.

The previous prime is 130691711. The next prime is 130691779. The reversal of 130691761 is 167196031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126427536 + 4264225 = 11244^2 + 2065^2 .

It is an emirp because it is prime and its reverse (167196031) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130691761 is a prime.

It is a super-2 number, since 2×130691761² = 34160672786562242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (130691711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65345880 + 65345881.

It is an arithmetic number, because the mean of its divisors is an integer number (65345881).

Almost surely, 2^130691761 is an apocalyptic number.

It is an amenable number.

130691761 is a deficient number, since it is larger than the sum of its proper divisors (1).

130691761 is an equidigital number, since it uses as much as digits as its factorization.

130691761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 130691761 is about 11432.0497287232. The cubic root of 130691761 is about 507.4766566143.

The spelling of 130691761 in words is "one hundred thirty million, six hundred ninety-one thousand, seven hundred sixty-one".