207143897 has 4 divisors (see below), whose sum is σ = 214286820. Its totient is φ = 200000976.

The previous prime is 207143887. The next prime is 207143903. The reversal of 207143897 is 798341702.

207143897 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.

It can be written as a sum of positive squares in 2 ways, for example, as 50993881 + 156150016 = 7141^2 + 12496^2 .

It is a cyclic number.

It is not a de Polignac number, because 207143897 - 2²⁶ = 140035033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (207143837) 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, 3571418 + ... + 3571475.

It is an arithmetic number, because the mean of its divisors is an integer number (53571705).

Almost surely, 2^207143897 is an apocalyptic number.

It is an amenable number.

207143897 is a deficient number, since it is larger than the sum of its proper divisors (7142923).

207143897 is an equidigital number, since it uses as much as digits as its factorization.

207143897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7142922.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 207143897 is about 14392.4944676036. The cubic root of 207143897 is about 591.6852106952.

The spelling of 207143897 in words is "two hundred seven million, one hundred forty-three thousand, eight hundred ninety-seven".