31404434012242 has 16 divisors (see below), whose sum is σ = 47186250043392. Its totient is φ = 15675690985920.

The previous prime is 31404434012153. The next prime is 31404434012251. The reversal of 31404434012242 is 24221043440413.

It is a junction number, because it is equal to n+sod(n) for n = 31404434012198 and 31404434012207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7264303 + ... + 10750765.

It is an arithmetic number, because the mean of its divisors is an integer number (2949140627712).

Almost surely, 2^{31404434012242} is an apocalyptic number.

31404434012242 is a deficient number, since it is larger than the sum of its proper divisors (15781816031150).

31404434012242 is a wasteful number, since it uses less digits than its factorization.

31404434012242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3494073.

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 31404434012242 its reverse (24221043440413), we get a palindrome (55625477452655).

The spelling of 31404434012242 in words is "thirty-one trillion, four hundred four billion, four hundred thirty-four million, twelve thousand, two hundred forty-two".