31066091 has 8 divisors (see below), whose sum is σ = 36034560. Its totient is φ = 26230248.

The previous prime is 31066067. The next prime is 31066103. The reversal of 31066091 is 19066013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31066091 - 2⁶ = 31066027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31066091.

It is not an unprimeable number, because it can be changed into a prime (31066591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32651 + ... + 33588.

It is an arithmetic number, because the mean of its divisors is an integer number (4504320).

Almost surely, 2^31066091 is an apocalyptic number.

31066091 is a deficient number, since it is larger than the sum of its proper divisors (4968469).

31066091 is an equidigital number, since it uses as much as digits as its factorization.

31066091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66313.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 31066091 is about 5573.6963498203. The cubic root of 31066091 is about 314.3611508509.

The spelling of 31066091 in words is "thirty-one million, sixty-six thousand, ninety-one".