31144233441 has 8 divisors (see below), whose sum is σ = 41526524704. Its totient is φ = 20762382240.

The previous prime is 31144233433. The next prime is 31144233473. The reversal of 31144233441 is 14433244113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31144233441 - 2³ = 31144233433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31144233399 and 31144233408.

It is not an unprimeable number, because it can be changed into a prime (31144233481) 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, 129810 + ... + 281316.

It is an arithmetic number, because the mean of its divisors is an integer number (5190815588).

Almost surely, 2^31144233441 is an apocalyptic number.

It is an amenable number.

31144233441 is a deficient number, since it is larger than the sum of its proper divisors (10382291263).

31144233441 is a wasteful number, since it uses less digits than its factorization.

31144233441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220031.

The product of its digits is 13824, while the sum is 30.

Adding to 31144233441 its reverse (14433244113), we get a palindrome (45577477554).

The spelling of 31144233441 in words is "thirty-one billion, one hundred forty-four million, two hundred thirty-three thousand, four hundred forty-one".