261013112 has 8 divisors (see below), whose sum is σ = 489399600. Its totient is φ = 130506552.

The previous prime is 261013099. The next prime is 261013147. The reversal of 261013112 is 211310162.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16313312 + ... + 16313327.

It is an arithmetic number, because the mean of its divisors is an integer number (61174950).

Almost surely, 2^261013112 is an apocalyptic number.

It is an amenable number.

261013112 is a deficient number, since it is larger than the sum of its proper divisors (228386488).

261013112 is a wasteful number, since it uses less digits than its factorization.

261013112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32626645 (or 32626641 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 261013112 is about 16155.9002225193. The cubic root of 261013112 is about 639.0783543913.

Adding to 261013112 its reverse (211310162), we get a palindrome (472323274).

The spelling of 261013112 in words is "two hundred sixty-one million, thirteen thousand, one hundred twelve".