31113242 has 8 divisors (see below), whose sum is σ = 46694100. Its totient is φ = 15548544.

The previous prime is 31113223. The next prime is 31113253. The reversal of 31113242 is 24231113.

It can be written as a sum of positive squares in 2 ways, for example, as 23222761 + 7890481 = 4819^2 + 2809^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 31113242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3884 + ... + 8792.

Almost surely, 2^31113242 is an apocalyptic number.

31113242 is a deficient number, since it is larger than the sum of its proper divisors (15580858).

31113242 is a wasteful number, since it uses less digits than its factorization.

31113242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8080.

The product of its digits is 144, while the sum is 17.

The square root of 31113242 is about 5577.9245244087. The cubic root of 31113242 is about 314.5201124869.

Adding to 31113242 its reverse (24231113), we get a palindrome (55344355).

The spelling of 31113242 in words is "thirty-one million, one hundred thirteen thousand, two hundred forty-two".