31480317 has 12 divisors (see below), whose sum is σ = 49605504. Its totient is φ = 19078920.

The previous prime is 31480289. The next prime is 31480349. The reversal of 31480317 is 71308413.

It is not a de Polignac number, because 31480317 - 2⁸ = 31480061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31480367) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158893 + ... + 159090.

It is an arithmetic number, because the mean of its divisors is an integer number (4133792).

Almost surely, 2^31480317 is an apocalyptic number.

It is an amenable number.

31480317 is a deficient number, since it is larger than the sum of its proper divisors (18125187).

31480317 is a wasteful number, since it uses less digits than its factorization.

31480317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318000 (or 317997 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 31480317 is about 5610.7323051452. The cubic root of 31480317 is about 315.7521858034.

The spelling of 31480317 in words is "thirty-one million, four hundred eighty thousand, three hundred seventeen".