261035112 has 64 divisors (see below), whose sum is σ = 719167680. Its totient is φ = 78446592.

The previous prime is 261035077. The next prime is 261035161. The reversal of 261035112 is 211530162.

261035112 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3688 + ... + 23144.

It is an arithmetic number, because the mean of its divisors is an integer number (11236995).

Almost surely, 2^261035112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 261035112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359583840).

261035112 is an abundant number, since it is smaller than the sum of its proper divisors (458132568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261035112 is a wasteful number, since it uses less digits than its factorization.

261035112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19522 (or 19518 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 261035112 is about 16156.5810739773. The cubic root of 261035112 is about 639.0963092094.

Adding to 261035112 its reverse (211530162), we get a palindrome (472565274).

The spelling of 261035112 in words is "two hundred sixty-one million, thirty-five thousand, one hundred twelve".