261060312 has 64 divisors (see below), whose sum is σ = 662929920. Its totient is φ = 85661568.

The previous prime is 261060299. The next prime is 261060377. The reversal of 261060312 is 213060162.

It is a happy number.

It is a congruent number.

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, 711153 + ... + 711519.

It is an arithmetic number, because the mean of its divisors is an integer number (10358280).

Almost surely, 2^261060312 is an apocalyptic number.

It is an amenable number.

261060312 is an abundant number, since it is smaller than the sum of its proper divisors (401869608).

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

261060312 is a wasteful number, since it uses less digits than its factorization.

261060312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 261060312 is about 16157.3609231211. The cubic root of 261060312 is about 639.1168743978.

The spelling of 261060312 in words is "two hundred sixty-one million, sixty thousand, three hundred twelve".