31144221010042 has 32 divisors (see below), whose sum is σ = 55724540385024. Its totient is φ = 12764185209600.

The previous prime is 31144221010037. The next prime is 31144221010061. The reversal of 31144221010042 is 24001012244113.

It is a junction number, because it is equal to n+sod(n) for n = 31144221009989 and 31144221010016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10037509 + ... + 12768712.

It is an arithmetic number, because the mean of its divisors is an integer number (1741391887032).

Almost surely, 2^{31144221010042} is an apocalyptic number.

31144221010042 is a deficient number, since it is larger than the sum of its proper divisors (24580319374982).

31144221010042 is a wasteful number, since it uses less digits than its factorization.

31144221010042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22810494.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 31144221010042 its reverse (24001012244113), we get a palindrome (55145233254155).

The spelling of 31144221010042 in words is "thirty-one trillion, one hundred forty-four billion, two hundred twenty-one million, ten thousand, forty-two".