31361105 has 8 divisors (see below), whose sum is σ = 38551464. Its totient is φ = 24476800.

The previous prime is 31361063. The next prime is 31361111. The reversal of 31361105 is 50116313.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4910656 + 26450449 = 2216^2 + 5143^2 .

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

It is not a de Polignac number, because 31361105 - 2¹² = 31357009 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, 76286 + ... + 76695.

It is an arithmetic number, because the mean of its divisors is an integer number (4818933).

Almost surely, 2^31361105 is an apocalyptic number.

It is an amenable number.

31361105 is a deficient number, since it is larger than the sum of its proper divisors (7190359).

31361105 is a wasteful number, since it uses less digits than its factorization.

31361105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153027.

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

The square root of 31361105 is about 5600.0986598452. The cubic root of 31361105 is about 315.3531103614.

Adding to 31361105 its reverse (50116313), we get a palindrome (81477418).

The spelling of 31361105 in words is "thirty-one million, three hundred sixty-one thousand, one hundred five".