442444401231 has 16 divisors (see below), whose sum is σ = 703514079744. Its totient is φ = 241832964384.

The previous prime is 442444401229. The next prime is 442444401247. The reversal of 442444401231 is 132104444244.

It is not a de Polignac number, because 442444401231 - 2¹ = 442444401229 is a prime.

It is a super-2 number, since 2×442444401231² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442444401192 and 442444401201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442444401281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 458016496 + ... + 458017461.

It is an arithmetic number, because the mean of its divisors is an integer number (43969629984).

Almost surely, 2^442444401231 is an apocalyptic number.

442444401231 is a deficient number, since it is larger than the sum of its proper divisors (261069678513).

442444401231 is a wasteful number, since it uses less digits than its factorization.

442444401231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916033990.

The product of its (nonzero) digits is 49152, while the sum is 33.

Adding to 442444401231 its reverse (132104444244), we get a palindrome (574548845475).

The spelling of 442444401231 in words is "four hundred forty-two billion, four hundred forty-four million, four hundred one thousand, two hundred thirty-one".