207213701 has 4 divisors (see below), whose sum is σ = 207394572. Its totient is φ = 207032832.

The previous prime is 207213583. The next prime is 207213709. The reversal of 207213701 is 107312702.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73788100 + 133425601 = 8590^2 + 11551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-207213701 is a prime.

It is a super-3 number, since 3×207213701³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207213709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88706 + ... + 91011.

It is an arithmetic number, because the mean of its divisors is an integer number (51848643).

Almost surely, 2^207213701 is an apocalyptic number.

It is an amenable number.

207213701 is a deficient number, since it is larger than the sum of its proper divisors (180871).

207213701 is a wasteful number, since it uses less digits than its factorization.

207213701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180870.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 207213701 is about 14394.9192773006. The cubic root of 207213701 is about 591.7516658769.

Subtracting from 207213701 its reverse (107312702), we obtain a palindrome (99900999).

The spelling of 207213701 in words is "two hundred seven million, two hundred thirteen thousand, seven hundred one".