220311442 has 12 divisors (see below), whose sum is σ = 357843690. Its totient is φ = 101682048.

The previous prime is 220311437. The next prime is 220311473. The reversal of 220311442 is 244113022.

220311442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 61324561 + 158986881 = 7831^2 + 12609^2 .

It is a super-2 number, since 2×220311442² = 97074262952238728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 325567 + ... + 326242.

Almost surely, 2^220311442 is an apocalyptic number.

220311442 is a deficient number, since it is larger than the sum of its proper divisors (137532248).

220311442 is a wasteful number, since it uses less digits than its factorization.

220311442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651837 (or 651824 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 220311442 is about 14842.8919688853. The cubic root of 220311442 is about 603.9658054849.

Adding to 220311442 its reverse (244113022), we get a palindrome (464424464).

The spelling of 220311442 in words is "two hundred twenty million, three hundred eleven thousand, four hundred forty-two".