261340107 has 8 divisors (see below), whose sum is σ = 398232576. Its totient is φ = 149337192.

The previous prime is 261340103. The next prime is 261340127. The reversal of 261340107 is 701043162.

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

It is not a de Polignac number, because 261340107 - 2² = 261340103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261340103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6222363 + ... + 6222404.

It is an arithmetic number, because the mean of its divisors is an integer number (49779072).

Almost surely, 2^261340107 is an apocalyptic number.

261340107 is a deficient number, since it is larger than the sum of its proper divisors (136892469).

261340107 is a wasteful number, since it uses less digits than its factorization.

261340107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12444777.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 261340107 is about 16166.0170419309. The cubic root of 261340107 is about 639.3451203251.

Adding to 261340107 its reverse (701043162), we get a palindrome (962383269).

The spelling of 261340107 in words is "two hundred sixty-one million, three hundred forty thousand, one hundred seven".