31170242 has 8 divisors (see below), whose sum is σ = 46808076. Its totient is φ = 15567552.

The previous prime is 31170239. The next prime is 31170257. The reversal of 31170242 is 24207113.

It can be written as a sum of positive squares in 2 ways, for example, as 24611521 + 6558721 = 4961^2 + 2561^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6443 + ... + 10190.

Almost surely, 2^31170242 is an apocalyptic number.

31170242 is a deficient number, since it is larger than the sum of its proper divisors (15637834).

31170242 is a wasteful number, since it uses less digits than its factorization.

31170242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17572.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 31170242 is about 5583.0316137382. The cubic root of 31170242 is about 314.7120640856.

Adding to 31170242 its reverse (24207113), we get a palindrome (55377355).

The spelling of 31170242 in words is "thirty-one million, one hundred seventy thousand, two hundred forty-two".