442651021331631 has 32 divisors (see below), whose sum is σ = 710024155261440. Its totient is φ = 239628103778304.

The previous prime is 442651021331579. The next prime is 442651021331681. The reversal of 442651021331631 is 136133120156244.

It is not a de Polignac number, because 442651021331631 - 2²² = 442651017137327 is a prime.

It is a super-3 number, since 3×442651021331631³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442651021331681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32394031 + ... + 43984943.

It is an arithmetic number, because the mean of its divisors is an integer number (22188254851920).

Almost surely, 2^{442651021331631} is an apocalyptic number.

442651021331631 is a deficient number, since it is larger than the sum of its proper divisors (267373133929809).

442651021331631 is a wasteful number, since it uses less digits than its factorization.

442651021331631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11686655.

The product of its (nonzero) digits is 311040, while the sum is 42.

Adding to 442651021331631 its reverse (136133120156244), we get a palindrome (578784141487875).

The spelling of 442651021331631 in words is "four hundred forty-two trillion, six hundred fifty-one billion, twenty-one million, three hundred thirty-one thousand, six hundred thirty-one".