261301113 has 8 divisors (see below), whose sum is σ = 387112800. Its totient is φ = 174200724.

The previous prime is 261301109. The next prime is 261301123. The reversal of 261301113 is 311103162.

It is not a de Polignac number, because 261301113 - 2² = 261301109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261301123) 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, 4838883 + ... + 4838936.

It is an arithmetic number, because the mean of its divisors is an integer number (48389100).

Almost surely, 2^261301113 is an apocalyptic number.

It is an amenable number.

261301113 is a deficient number, since it is larger than the sum of its proper divisors (125811687).

261301113 is an equidigital number, since it uses as much as digits as its factorization.

261301113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9677828 (or 9677822 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 261301113 is about 16164.8109484769. The cubic root of 261301113 is about 639.3133203028.

Adding to 261301113 its reverse (311103162), we get a palindrome (572404275).

The spelling of 261301113 in words is "two hundred sixty-one million, three hundred one thousand, one hundred thirteen".