207520213 has 4 divisors (see below), whose sum is σ = 207550188. Its totient is φ = 207490240.

The previous prime is 207520211. The next prime is 207520217. The reversal of 207520213 is 312025702.

207520213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 312025702 = 2 ⋅156012851.

It can be written as a sum of positive squares in 2 ways, for example, as 149866564 + 57653649 = 12242^2 + 7593^2 .

It is a cyclic number.

It is not a de Polignac number, because 207520213 - 2¹ = 207520211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207520211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1293 + ... + 20413.

It is an arithmetic number, because the mean of its divisors is an integer number (51887547).

Almost surely, 2^207520213 is an apocalyptic number.

It is an amenable number.

207520213 is a deficient number, since it is larger than the sum of its proper divisors (29975).

207520213 is a wasteful number, since it uses less digits than its factorization.

207520213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29974.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 207520213 is about 14405.5618772750. The cubic root of 207520213 is about 592.0432965732.

Adding to 207520213 its reverse (312025702), we get a palindrome (519545915).

The spelling of 207520213 in words is "two hundred seven million, five hundred twenty thousand, two hundred thirteen".