31079317 has 8 divisors (see below), whose sum is σ = 31685472. Its totient is φ = 30476400.

The previous prime is 31079309. The next prime is 31079333. The reversal of 31079317 is 71397013.

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 31079317 - 2³ = 31079309 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 (31079617) 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, 27942 + ... + 29032.

It is an arithmetic number, because the mean of its divisors is an integer number (3960684).

Almost surely, 2^31079317 is an apocalyptic number.

It is an amenable number.

31079317 is a deficient number, since it is larger than the sum of its proper divisors (606155).

31079317 is a wasteful number, since it uses less digits than its factorization.

31079317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619.

The product of its (nonzero) digits is 3969, while the sum is 31.

The square root of 31079317 is about 5574.8826893487. The cubic root of 31079317 is about 314.4057562986.

The spelling of 31079317 in words is "thirty-one million, seventy-nine thousand, three hundred seventeen".