31144233430444 has 24 divisors (see below), whose sum is σ = 55349669072880. Its totient is φ = 15330326231616.

The previous prime is 31144233430369. The next prime is 31144233430459. The reversal of 31144233430444 is 44403433244113.

It is a junction number, because it is equal to n+sod(n) for n = 31144233430397 and 31144233430406.

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, 35056039 + ... + 35933470.

It is an arithmetic number, because the mean of its divisors is an integer number (2306236211370).

Almost surely, 2^{31144233430444} is an apocalyptic number.

It is an amenable number.

31144233430444 is a deficient number, since it is larger than the sum of its proper divisors (24205435642436).

31144233430444 is a wasteful number, since it uses less digits than its factorization.

31144233430444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70991217 (or 70991215 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 40.

Adding to 31144233430444 its reverse (44403433244113), we get a palindrome (75547666674557).

The spelling of 31144233430444 in words is "thirty-one trillion, one hundred forty-four billion, two hundred thirty-three million, four hundred thirty thousand, four hundred forty-four".