31144434442 has 16 divisors (see below), whose sum is σ = 51004144800. Its totient is φ = 14145304240.

The previous prime is 31144434407. The next prime is 31144434479. The reversal of 31144434442 is 24443444113.

It is a junction number, because it is equal to n+sod(n) for n = 31144434398 and 31144434407.

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, 534517 + ... + 589912.

It is an arithmetic number, because the mean of its divisors is an integer number (3187759050).

Almost surely, 2^31144434442 is an apocalyptic number.

31144434442 is a deficient number, since it is larger than the sum of its proper divisors (19859710358).

31144434442 is a wasteful number, since it uses less digits than its factorization.

31144434442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125701.

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

Adding to 31144434442 its reverse (24443444113), we get a palindrome (55587878555).

The spelling of 31144434442 in words is "thirty-one billion, one hundred forty-four million, four hundred thirty-four thousand, four hundred forty-two".