31424199 has 4 divisors (see below), whose sum is σ = 41898936. Its totient is φ = 20949464.

The previous prime is 31424191. The next prime is 31424203. The reversal of 31424199 is 99142413.

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

It is a cyclic number.

It is not a de Polignac number, because 31424199 - 2³ = 31424191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31424191) 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 in 3 ways as a sum of consecutive naturals, for example, 5237364 + ... + 5237369.

It is an arithmetic number, because the mean of its divisors is an integer number (10474734).

Almost surely, 2^31424199 is an apocalyptic number.

31424199 is a deficient number, since it is larger than the sum of its proper divisors (10474737).

31424199 is a wasteful number, since it uses less digits than its factorization.

31424199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10474736.

The product of its digits is 7776, while the sum is 33.

The square root of 31424199 is about 5605.7291229598. The cubic root of 31424199 is about 315.5644502873.

The spelling of 31424199 in words is "thirty-one million, four hundred twenty-four thousand, one hundred ninety-nine".