31316105 has 8 divisors (see below), whose sum is σ = 37771272. Its totient is φ = 24924928.

The previous prime is 31316093. The next prime is 31316111. The reversal of 31316105 is 50161313.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15147664 + 16168441 = 3892^2 + 4021^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31316105 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14912 + ... + 16881.

It is an arithmetic number, because the mean of its divisors is an integer number (4721409).

Almost surely, 2^31316105 is an apocalyptic number.

It is an amenable number.

31316105 is a deficient number, since it is larger than the sum of its proper divisors (6455167).

31316105 is a wasteful number, since it uses less digits than its factorization.

31316105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31995.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 31316105 is about 5596.0794311732. The cubic root of 31316105 is about 315.2022049338.

Adding to 31316105 its reverse (50161313), we get a palindrome (81477418).

The spelling of 31316105 in words is "thirty-one million, three hundred sixteen thousand, one hundred five".