42643415231 has 4 divisors (see below), whose sum is σ = 42651933600. Its totient is φ = 42634896864.

The previous prime is 42643415207. The next prime is 42643415239. The reversal of 42643415231 is 13251434624.

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 42643415231 - 2³⁰ = 41569673407 is a prime.

It is a super-2 number, since 2×42643415231² (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 = 42643415191 and 42643415200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42643415239) 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, 4251671 + ... + 4261688.

It is an arithmetic number, because the mean of its divisors is an integer number (10662983400).

Almost surely, 2^42643415231 is an apocalyptic number.

42643415231 is a deficient number, since it is larger than the sum of its proper divisors (8518369).

42643415231 is an equidigital number, since it uses as much as digits as its factorization.

42643415231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8518368.

The product of its digits is 69120, while the sum is 35.

Adding to 42643415231 its reverse (13251434624), we get a palindrome (55894849855).

The spelling of 42643415231 in words is "forty-two billion, six hundred forty-three million, four hundred fifteen thousand, two hundred thirty-one".