31243344042 has 8 divisors (see below), whose sum is σ = 62486688096. Its totient is φ = 10414448012.

The previous prime is 31243344031. The next prime is 31243344043. The reversal of 31243344042 is 24044334213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

31243344042 is an admirable number.

It is a super-2 number, since 2×31243344042² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31243344043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2603611998 + ... + 2603612009.

It is an arithmetic number, because the mean of its divisors is an integer number (7810836012).

Almost surely, 2^31243344042 is an apocalyptic number.

31243344042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31243344042 is a wasteful number, since it uses less digits than its factorization.

31243344042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5207224012.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 31243344042 its reverse (24044334213), we get a palindrome (55287678255).

The spelling of 31243344042 in words is "thirty-one billion, two hundred forty-three million, three hundred forty-four thousand, forty-two".