31104243442 has 16 divisors (see below), whose sum is σ = 46909238400. Its totient is φ = 15467991280.

The previous prime is 31104243439. The next prime is 31104243449. The reversal of 31104243442 is 24434240113.

It is a self number, because there is not a number n which added to its sum of digits gives 31104243442.

It is not an unprimeable number, because it can be changed into a prime (31104243449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352809 + ... + 432067.

It is an arithmetic number, because the mean of its divisors is an integer number (2931827400).

Almost surely, 2^31104243442 is an apocalyptic number.

31104243442 is a deficient number, since it is larger than the sum of its proper divisors (15804994958).

31104243442 is a wasteful number, since it uses less digits than its factorization.

31104243442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80321.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 31104243442 its reverse (24434240113), we get a palindrome (55538483555).

The spelling of 31104243442 in words is "thirty-one billion, one hundred four million, two hundred forty-three thousand, four hundred forty-two".