31416249 has 4 divisors (see below), whose sum is σ = 41888336. Its totient is φ = 20944164.

The previous prime is 31416239. The next prime is 31416271. The reversal of 31416249 is 94261413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 31416249 - 2⁹ = 31415737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31416239) 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, 5236039 + ... + 5236044.

It is an arithmetic number, because the mean of its divisors is an integer number (10472084).

Almost surely, 2^31416249 is an apocalyptic number.

It is an amenable number.

31416249 is a deficient number, since it is larger than the sum of its proper divisors (10472087).

31416249 is a wasteful number, since it uses less digits than its factorization.

31416249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10472086.

The product of its digits is 5184, while the sum is 30.

The square root of 31416249 is about 5605.0199821232. The cubic root of 31416249 is about 315.5378365198.

The spelling of 31416249 in words is "thirty-one million, four hundred sixteen thousand, two hundred forty-nine".