31325867 has 2 divisors, whose sum is σ = 31325868. Its totient is φ = 31325866.

The previous prime is 31325843. The next prime is 31325869. The reversal of 31325867 is 76852313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31325867 - 2⁶ = 31325803 is a prime.

Together with 31325869, 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 (31325869) 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, 15662933 + 15662934.

It is an arithmetic number, because the mean of its divisors is an integer number (15662934).

Almost surely, 2^31325867 is an apocalyptic number.

31325867 is a deficient number, since it is larger than the sum of its proper divisors (1).

31325867 is an equidigital number, since it uses as much as digits as its factorization.

31325867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 35.

The square root of 31325867 is about 5596.9515809948. The cubic root of 31325867 is about 315.2349536239.

The spelling of 31325867 in words is "thirty-one million, three hundred twenty-five thousand, eight hundred sixty-seven".