31417693 has 4 divisors (see below), whose sum is σ = 31628700. Its totient is φ = 31206688.

The previous prime is 31417691. The next prime is 31417703. The reversal of 31417693 is 39671413.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4761124 + 26656569 = 2182^2 + 5163^2 .

It is a cyclic number.

It is not a de Polignac number, because 31417693 - 2¹ = 31417691 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 (31417691) 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 3 ways as a sum of consecutive naturals, for example, 105280 + ... + 105577.

It is an arithmetic number, because the mean of its divisors is an integer number (7907175).

Almost surely, 2^31417693 is an apocalyptic number.

It is an amenable number.

31417693 is a deficient number, since it is larger than the sum of its proper divisors (211007).

31417693 is a wasteful number, since it uses less digits than its factorization.

31417693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211006.

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

The square root of 31417693 is about 5605.1487937431. The cubic root of 31417693 is about 315.5426708510.

The spelling of 31417693 in words is "thirty-one million, four hundred seventeen thousand, six hundred ninety-three".