42331321331 has 4 divisors (see below), whose sum is σ = 45587576832. Its totient is φ = 39075065832.

The previous prime is 42331321259. The next prime is 42331321337. The reversal of 42331321331 is 13312313324.

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 42331321331 - 2³⁴ = 25151452147 is a prime.

It is a super-2 number, since 2×42331321331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42331321331.

It is not an unprimeable number, because it can be changed into a prime (42331321337) 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, 1628127731 + ... + 1628127756.

It is an arithmetic number, because the mean of its divisors is an integer number (11396894208).

Almost surely, 2^42331321331 is an apocalyptic number.

42331321331 is a deficient number, since it is larger than the sum of its proper divisors (3256255501).

42331321331 is a wasteful number, since it uses less digits than its factorization.

42331321331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3256255500.

The product of its digits is 3888, while the sum is 26.

Adding to 42331321331 its reverse (13312313324), we get a palindrome (55643634655).

The spelling of 42331321331 in words is "forty-two billion, three hundred thirty-one million, three hundred twenty-one thousand, three hundred thirty-one".