261310701 has 8 divisors (see below), whose sum is σ = 348960384. Its totient is φ = 173934080.

The previous prime is 261310669. The next prime is 261310703. The reversal of 261310701 is 107013162.

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

It is a cyclic number.

It is not a de Polignac number, because 261310701 - 2⁵ = 261310669 is a prime.

It is a super-2 number, since 2×261310701² = 136566564914222802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261310703) 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, 66021 + ... + 69866.

It is an arithmetic number, because the mean of its divisors is an integer number (43620048).

Almost surely, 2^261310701 is an apocalyptic number.

It is an amenable number.

261310701 is a deficient number, since it is larger than the sum of its proper divisors (87649683).

261310701 is a wasteful number, since it uses less digits than its factorization.

261310701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136531.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 261310701 is about 16165.1075158812. The cubic root of 261310701 is about 639.3211397122.

Adding to 261310701 its reverse (107013162), we get a palindrome (368323863).

The spelling of 261310701 in words is "two hundred sixty-one million, three hundred ten thousand, seven hundred one".