207043321 has 3 divisors (see below), whose sum is σ = 207057711. Its totient is φ = 207028932.

The previous prime is 207043307. The next prime is 207043363. The reversal of 207043321 is 123340702.

The square root of 207043321 is 14389.

It is a perfect power (a square), and thus also a powerful number.

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.

It can be written as a sum of positive squares in only one way, i.e., 58690921 + 148352400 = 7661^2 + 12180^2 .

It is not a de Polignac number, because 207043321 - 2¹⁷ = 206912249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 207043292 and 207043301.

It is not an unprimeable number, because it can be changed into a prime (207043621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7195 + ... + 21583.

It is an arithmetic number, because the mean of its divisors is an integer number (69019237).

Almost surely, 2^207043321 is an apocalyptic number.

207043321 is the 14389-th square number.

207043321 is the 7195-th centered octagonal number.

It is an amenable number.

207043321 is a deficient number, since it is larger than the sum of its proper divisors (14390).

207043321 is an frugal number, since it uses more digits than its factorization.

207043321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28778 (or 14389 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The cubic root of 207043321 is about 591.5894335301.

It can be divided in two parts, 20704 and 3321, that added together give a square (24025 = 155²).

The spelling of 207043321 in words is "two hundred seven million, forty-three thousand, three hundred twenty-one".