42311240031 has 4 divisors (see below), whose sum is σ = 56414986712. Its totient is φ = 28207493352.

The previous prime is 42311240029. The next prime is 42311240063. The reversal of 42311240031 is 13004211324.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42311240031 - 2¹ = 42311240029 is a prime.

It is a super-2 number, since 2×42311240031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42311240431) 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, 7051873336 + ... + 7051873341.

It is an arithmetic number, because the mean of its divisors is an integer number (14103746678).

Almost surely, 2^42311240031 is an apocalyptic number.

42311240031 is a deficient number, since it is larger than the sum of its proper divisors (14103746681).

42311240031 is a wasteful number, since it uses less digits than its factorization.

42311240031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14103746680.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 42311240031 its reverse (13004211324), we get a palindrome (55315451355).

The spelling of 42311240031 in words is "forty-two billion, three hundred eleven million, two hundred forty thousand, thirty-one".