207313681 has 8 divisors (see below), whose sum is σ = 210605184. Its totient is φ = 204032640.

The previous prime is 207313643. The next prime is 207313739. The reversal of 207313681 is 186313702.

207313681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 207313681 - 2¹³ = 207305489 is a prime.

It is a super-2 number, since 2×207313681² = 85957924659539522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (207313481) 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, 43681 + ... + 48193.

It is an arithmetic number, because the mean of its divisors is an integer number (26325648).

Almost surely, 2^207313681 is an apocalyptic number.

It is an amenable number.

207313681 is a deficient number, since it is larger than the sum of its proper divisors (3291503).

207313681 is an equidigital number, since it uses as much as digits as its factorization.

207313681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5231.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 207313681 is about 14398.3916115655. The cubic root of 207313681 is about 591.8468233857.

The spelling of 207313681 in words is "two hundred seven million, three hundred thirteen thousand, six hundred eighty-one".