31853147 has 2 divisors, whose sum is σ = 31853148. Its totient is φ = 31853146.

The previous prime is 31853141. The next prime is 31853149. The reversal of 31853147 is 74135813.

It is a strong prime.

It is an emirp because it is prime and its reverse (74135813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31853147 - 2⁶ = 31853083 is a prime.

Together with 31853149, 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 (31853141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15926573 + 15926574.

It is an arithmetic number, because the mean of its divisors is an integer number (15926574).

Almost surely, 2^31853147 is an apocalyptic number.

31853147 is a deficient number, since it is larger than the sum of its proper divisors (1).

31853147 is an equidigital number, since it uses as much as digits as its factorization.

31853147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 32.

The square root of 31853147 is about 5643.8592292863. The cubic root of 31853147 is about 316.9938101469.

The spelling of 31853147 in words is "thirty-one million, eight hundred fifty-three thousand, one hundred forty-seven".