261712012 has 6 divisors (see below), whose sum is σ = 457996028. Its totient is φ = 130856004.

The previous prime is 261712001. The next prime is 261712019. The reversal of 261712012 is 210217162.

It is a happy number.

261712012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (261712019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32713998 + ... + 32714005.

Almost surely, 2^261712012 is an apocalyptic number.

It is an amenable number.

261712012 is a deficient number, since it is larger than the sum of its proper divisors (196284016).

261712012 is a wasteful number, since it uses less digits than its factorization.

261712012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65428007 (or 65428005 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 261712012 is about 16177.5156312705. The cubic root of 261712012 is about 639.6482539803.

Adding to 261712012 its reverse (210217162), we get a palindrome (471929174).

The spelling of 261712012 in words is "two hundred sixty-one million, seven hundred twelve thousand, twelve".