31022242 has 4 divisors (see below), whose sum is σ = 46533366. Its totient is φ = 15511120.

The previous prime is 31022237. The next prime is 31022279. The reversal of 31022242 is 24222013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16801801 + 14220441 = 4099^2 + 3771^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7755559 + ... + 7755562.

Almost surely, 2^31022242 is an apocalyptic number.

31022242 is a deficient number, since it is larger than the sum of its proper divisors (15511124).

31022242 is a wasteful number, since it uses less digits than its factorization.

31022242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15511123.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 31022242 is about 5569.7613952485. The cubic root of 31022242 is about 314.2131769432.

Adding to 31022242 its reverse (24222013), we get a palindrome (55244255).

The spelling of 31022242 in words is "thirty-one million, twenty-two thousand, two hundred forty-two".