42321040031 has 4 divisors (see below), whose sum is σ = 44810512992. Its totient is φ = 39831567072.

The previous prime is 42321040007. The next prime is 42321040033. The reversal of 42321040031 is 13004012324.

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 42321040031 - 2¹⁸ = 42320777887 is a prime.

It is a super-2 number, since 2×42321040031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42321039985 and 42321040012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42321040033) 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, 1244736455 + ... + 1244736488.

It is an arithmetic number, because the mean of its divisors is an integer number (11202628248).

Almost surely, 2^42321040031 is an apocalyptic number.

42321040031 is a deficient number, since it is larger than the sum of its proper divisors (2489472961).

42321040031 is a wasteful number, since it uses less digits than its factorization.

42321040031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2489472960.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 42321040031 its reverse (13004012324), we get a palindrome (55325052355).

The spelling of 42321040031 in words is "forty-two billion, three hundred twenty-one million, forty thousand, thirty-one".