42816324731 has 4 divisors (see below), whose sum is σ = 42842072832. Its totient is φ = 42790576632.

The previous prime is 42816324709. The next prime is 42816324767. The reversal of 42816324731 is 13742361824.

42816324731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42816324731 - 2²⁶ = 42749215867 is a prime.

It is a super-2 number, since 2×42816324731² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42816324701) 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, 12871556 + ... + 12874881.

It is an arithmetic number, because the mean of its divisors is an integer number (10710518208).

Almost surely, 2^42816324731 is an apocalyptic number.

42816324731 is a deficient number, since it is larger than the sum of its proper divisors (25748101).

42816324731 is a wasteful number, since it uses less digits than its factorization.

42816324731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25748100.

The product of its digits is 193536, while the sum is 41.

The spelling of 42816324731 in words is "forty-two billion, eight hundred sixteen million, three hundred twenty-four thousand, seven hundred thirty-one".