130340261 has 8 divisors (see below), whose sum is σ = 131125080. Its totient is φ = 129558528.

The previous prime is 130340251. The next prime is 130340269. The reversal of 130340261 is 162043031.

It can be written as a sum of positive squares in 4 ways, for example, as 47348161 + 82992100 = 6881^2 + 9110^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130340261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130340269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225605 + ... + 226181.

It is an arithmetic number, because the mean of its divisors is an integer number (16390635).

Almost surely, 2^130340261 is an apocalyptic number.

It is an amenable number.

130340261 is a deficient number, since it is larger than the sum of its proper divisors (784819).

130340261 is an equidigital number, since it uses as much as digits as its factorization.

130340261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 130340261 is about 11416.6659318735. The cubic root of 130340261 is about 507.0212894696.

Adding to 130340261 its reverse (162043031), we get a palindrome (292383292).

The spelling of 130340261 in words is "one hundred thirty million, three hundred forty thousand, two hundred sixty-one".