31200240440242 has 8 divisors (see below), whose sum is σ = 48835158950016. Its totient is φ = 14921854123572.

The previous prime is 31200240440227. The next prime is 31200240440323. The reversal of 31200240440242 is 24204404200213.

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

It is a self number, because there is not a number n which added to its sum of digits gives 31200240440242.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339133048218 + ... + 339133048309.

It is an arithmetic number, because the mean of its divisors is an integer number (6104394868752).

Almost surely, 2^{31200240440242} is an apocalyptic number.

31200240440242 is a deficient number, since it is larger than the sum of its proper divisors (17634918509774).

31200240440242 is a wasteful number, since it uses less digits than its factorization.

31200240440242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678266096552.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 31200240440242 its reverse (24204404200213), we get a palindrome (55404644640455).

The spelling of 31200240440242 in words is "thirty-one trillion, two hundred billion, two hundred forty million, four hundred forty thousand, two hundred forty-two".