31144043023340 has 96 divisors (see below), whose sum is σ = 72709268889600. Its totient is φ = 11127815366400.

The previous prime is 31144043023319. The next prime is 31144043023343. The reversal of 31144043023340 is 4332034044113.

It is a junction number, because it is equal to n+sod(n) for n = 31144043023297 and 31144043023306.

It is not an unprimeable number, because it can be changed into a prime (31144043023343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174095261 + ... + 174274059.

It is an arithmetic number, because the mean of its divisors is an integer number (757388217600).

Almost surely, 2^{31144043023340} is an apocalyptic number.

It is an amenable number.

31144043023340 is an abundant number, since it is smaller than the sum of its proper divisors (41565225866260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31144043023340 is a wasteful number, since it uses less digits than its factorization.

31144043023340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200463 (or 200461 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 31144043023340 its reverse (4332034044113), we get a palindrome (35476077067453).

The spelling of 31144043023340 in words is "thirty-one trillion, one hundred forty-four billion, forty-three million, twenty-three thousand, three hundred forty".