31214849 has 2 divisors, whose sum is σ = 31214850. Its totient is φ = 31214848.

The previous prime is 31214809. The next prime is 31214851. The reversal of 31214849 is 94841213.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30724849 + 490000 = 5543^2 + 700^2 .

It is a cyclic number.

It is not a de Polignac number, because 31214849 - 2²⁰ = 30166273 is a prime.

Together with 31214851, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31214809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15607424 + 15607425.

It is an arithmetic number, because the mean of its divisors is an integer number (15607425).

Almost surely, 2^31214849 is an apocalyptic number.

It is an amenable number.

31214849 is a deficient number, since it is larger than the sum of its proper divisors (1).

31214849 is an equidigital number, since it uses as much as digits as its factorization.

31214849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 32.

The square root of 31214849 is about 5587.0250581146. The cubic root of 31214849 is about 314.8621182056.

The spelling of 31214849 in words is "thirty-one million, two hundred fourteen thousand, eight hundred forty-nine".