207631313 has 8 divisors (see below), whose sum is σ = 211001448. Its totient is φ = 204286464.

The previous prime is 207631301. The next prime is 207631321. The reversal of 207631313 is 313136702.

It can be written as a sum of positive squares in 4 ways, for example, as 68674369 + 138956944 = 8287^2 + 11788^2 .

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 207631313 - 2¹⁰ = 207630289 is a prime.

It is a super-2 number, since 2×207631313² = 86221524276207938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (207631343) 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, 10595 + ... + 22967.

It is an arithmetic number, because the mean of its divisors is an integer number (26375181).

Almost surely, 2^207631313 is an apocalyptic number.

It is an amenable number.

207631313 is a deficient number, since it is larger than the sum of its proper divisors (3370135).

207631313 is a wasteful number, since it uses less digits than its factorization.

207631313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12643.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 207631313 is about 14409.4175107809. The cubic root of 207631313 is about 592.1489317056.

The spelling of 207631313 in words is "two hundred seven million, six hundred thirty-one thousand, three hundred thirteen".