31328867 has 2 divisors, whose sum is σ = 31328868. Its totient is φ = 31328866.

The previous prime is 31328861. The next prime is 31328873. The reversal of 31328867 is 76882313.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (31328861) and next prime (31328873).

It is a cyclic number.

It is not a de Polignac number, because 31328867 - 2¹⁰ = 31327843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31328867.

It is not a weakly prime, because it can be changed into another prime (31328861) 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, 15664433 + 15664434.

It is an arithmetic number, because the mean of its divisors is an integer number (15664434).

Almost surely, 2^31328867 is an apocalyptic number.

31328867 is a deficient number, since it is larger than the sum of its proper divisors (1).

31328867 is an equidigital number, since it uses as much as digits as its factorization.

31328867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 31328867 is about 5597.2195776117. The cubic root of 31328867 is about 315.2450163906.

The spelling of 31328867 in words is "thirty-one million, three hundred twenty-eight thousand, eight hundred sixty-seven".