42311559831 has 4 divisors (see below), whose sum is σ = 56415413112. Its totient is φ = 28207706552.

The previous prime is 42311559821. The next prime is 42311559833. The reversal of 42311559831 is 13895511324.

It is a happy number.

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 42311559831 - 2⁶ = 42311559767 is a prime.

It is a super-2 number, since 2×42311559831² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42311559833) 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, 7051926636 + ... + 7051926641.

It is an arithmetic number, because the mean of its divisors is an integer number (14103853278).

Almost surely, 2^42311559831 is an apocalyptic number.

42311559831 is a deficient number, since it is larger than the sum of its proper divisors (14103853281).

42311559831 is a wasteful number, since it uses less digits than its factorization.

42311559831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14103853280.

The product of its digits is 129600, while the sum is 42.

The spelling of 42311559831 in words is "forty-two billion, three hundred eleven million, five hundred fifty-nine thousand, eight hundred thirty-one".