442011331 has 4 divisors (see below), whose sum is σ = 444978000. Its totient is φ = 439044664.

The previous prime is 442011313. The next prime is 442011337. The reversal of 442011331 is 133110244.

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

It is a cyclic number.

It is not a de Polignac number, because 442011331 - 2¹¹ = 442009283 is a prime.

It is a super-3 number, since 3×442011331³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442011299 and 442011308.

It is not an unprimeable number, because it can be changed into a prime (442011337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1483111 + ... + 1483408.

It is an arithmetic number, because the mean of its divisors is an integer number (111244500).

Almost surely, 2^442011331 is an apocalyptic number.

442011331 is a deficient number, since it is larger than the sum of its proper divisors (2966669).

442011331 is a wasteful number, since it uses less digits than its factorization.

442011331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966668.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 442011331 is about 21024.0655202556. The cubic root of 442011331 is about 761.7476695215.

Adding to 442011331 its reverse (133110244), we get a palindrome (575121575).

It can be divided in two parts, 4420 and 11331, that added together give a palindrome (15751).

The spelling of 442011331 in words is "four hundred forty-two million, eleven thousand, three hundred thirty-one".