442001132513231 has 8 divisors (see below), whose sum is σ = 448918356451824. Its totient is φ = 435121811172160.

The previous prime is 442001132513179. The next prime is 442001132513233. The reversal of 442001132513231 is 132315231100244.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442001132513231 is a prime.

It is a super-2 number, since 2×442001132513231² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442001132513233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9475625876 + ... + 9475672521.

It is an arithmetic number, because the mean of its divisors is an integer number (56114794556478).

Almost surely, 2^{442001132513231} is an apocalyptic number.

442001132513231 is a deficient number, since it is larger than the sum of its proper divisors (6917223938593).

442001132513231 is a wasteful number, since it uses less digits than its factorization.

442001132513231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18951298761.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 442001132513231 its reverse (132315231100244), we get a palindrome (574316363613475).

The spelling of 442001132513231 in words is "four hundred forty-two trillion, one billion, one hundred thirty-two million, five hundred thirteen thousand, two hundred thirty-one".