313722242 has 16 divisors (see below), whose sum is σ = 482556312. Its totient is φ = 152878080.

The previous prime is 313722217. The next prime is 313722257. The reversal of 313722242 is 242227313.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 113188321 + 200533921 = 10639^2 + 14161^2 .

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 7 ways as a sum of consecutive naturals, for example, 144638 + ... + 146790.

Almost surely, 2^313722242 is an apocalyptic number.

313722242 is a deficient number, since it is larger than the sum of its proper divisors (168834070).

313722242 is a wasteful number, since it uses less digits than its factorization.

313722242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3973.

The product of its digits is 4032, while the sum is 26.

The square root of 313722242 is about 17712.2060173204. The cubic root of 313722242 is about 679.4879666167.

Adding to 313722242 its reverse (242227313), we get a palindrome (555949555).

It can be divided in two parts, 31 and 3722242, that added together give a palindrome (3722273).

The spelling of 313722242 in words is "three hundred thirteen million, seven hundred twenty-two thousand, two hundred forty-two".