31394671 has 8 divisors (see below), whose sum is σ = 39141504. Its totient is φ = 24463320.

The previous prime is 31394651. The next prime is 31394683. The reversal of 31394671 is 17649313.

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

It is not a de Polignac number, because 31394671 - 2⁵ = 31394639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31394651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203785 + ... + 203938.

It is an arithmetic number, because the mean of its divisors is an integer number (4892688).

Almost surely, 2^31394671 is an apocalyptic number.

31394671 is a deficient number, since it is larger than the sum of its proper divisors (7746833).

31394671 is a wasteful number, since it uses less digits than its factorization.

31394671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407741.

The product of its digits is 13608, while the sum is 34.

The square root of 31394671 is about 5603.0947698571. The cubic root of 31394671 is about 315.4655784254.

The spelling of 31394671 in words is "thirty-one million, three hundred ninety-four thousand, six hundred seventy-one".