261316214 has 16 divisors (see below), whose sum is σ = 421229808. Its totient is φ = 121135872.

The previous prime is 261316213. The next prime is 261316217. The reversal of 261316214 is 412613162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261316213) 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, 55079 + ... + 59634.

It is an arithmetic number, because the mean of its divisors is an integer number (26326863).

Almost surely, 2^261316214 is an apocalyptic number.

261316214 is a deficient number, since it is larger than the sum of its proper divisors (159913594).

261316214 is a wasteful number, since it uses less digits than its factorization.

261316214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114799.

The product of its digits is 1728, while the sum is 26.

The square root of 261316214 is about 16165.2780365820. The cubic root of 261316214 is about 639.3256357045.

Adding to 261316214 its reverse (412613162), we get a palindrome (673929376).

The spelling of 261316214 in words is "two hundred sixty-one million, three hundred sixteen thousand, two hundred fourteen".