31424203 has 2 divisors, whose sum is σ = 31424204. Its totient is φ = 31424202.

The previous prime is 31424191. The next prime is 31424207. The reversal of 31424203 is 30242413.

It is a strong prime.

It is an emirp because it is prime and its reverse (30242413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31424203 - 2⁵ = 31424171 is a prime.

It is equal to p_1940500 and since 31424203 and 1940500 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (31424207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15712101 + 15712102.

It is an arithmetic number, because the mean of its divisors is an integer number (15712102).

Almost surely, 2^31424203 is an apocalyptic number.

31424203 is a deficient number, since it is larger than the sum of its proper divisors (1).

31424203 is an equidigital number, since it uses as much as digits as its factorization.

31424203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 31424203 is about 5605.7294797377. The cubic root of 31424203 is about 315.5644636767.

Adding to 31424203 its reverse (30242413), we get a palindrome (61666616).

The spelling of 31424203 in words is "thirty-one million, four hundred twenty-four thousand, two hundred three".