207830431 has 2 divisors, whose sum is σ = 207830432. Its totient is φ = 207830430.

The previous prime is 207830429. The next prime is 207830527. The reversal of 207830431 is 134038702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 207830431 - 2¹ = 207830429 is a prime.

It is a super-2 number, since 2×207830431² = 86386976099291522, which contains 22 as substring.

Together with 207830429, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 207830431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (207830731) 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 as a sum of consecutive naturals, namely, 103915215 + 103915216.

It is an arithmetic number, because the mean of its divisors is an integer number (103915216).

Almost surely, 2^207830431 is an apocalyptic number.

207830431 is a deficient number, since it is larger than the sum of its proper divisors (1).

207830431 is an equidigital number, since it uses as much as digits as its factorization.

207830431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 207830431 is about 14416.3251558780. The cubic root of 207830431 is about 592.3381610955.

The spelling of 207830431 in words is "two hundred seven million, eight hundred thirty thousand, four hundred thirty-one".