31234120042 has 8 divisors (see below), whose sum is σ = 46856095776. Its totient is φ = 15615421452.

The previous prime is 31234120039. The next prime is 31234120079. The reversal of 31234120042 is 24002143213.

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

It is a junction number, because it is equal to n+sod(n) for n = 31234119995 and 31234120022.

It is an unprimeable number.

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, 795318 + ... + 833665.

It is an arithmetic number, because the mean of its divisors is an integer number (5857011972).

Almost surely, 2^31234120042 is an apocalyptic number.

31234120042 is a deficient number, since it is larger than the sum of its proper divisors (15621975734).

31234120042 is a wasteful number, since it uses less digits than its factorization.

31234120042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638572.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31234120042 its reverse (24002143213), we get a palindrome (55236263255).

The spelling of 31234120042 in words is "thirty-one billion, two hundred thirty-four million, one hundred twenty thousand, forty-two".