31243010344 has 96 divisors (see below), whose sum is σ = 73574562600. Its totient is φ = 12328243200.

The previous prime is 31243010341. The next prime is 31243010369. The reversal of 31243010344 is 44301034213.

It can be written as a sum of positive squares in 4 ways, for example, as 30219650244 + 1023360100 = 173838^2 + 31990^2 .

It is a super-2 number, since 2×31243010344² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31243010341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2035852 + ... + 2051140.

Almost surely, 2^31243010344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31243010344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36787281300).

31243010344 is an abundant number, since it is smaller than the sum of its proper divisors (42331552256).

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

31243010344 is a wasteful number, since it uses less digits than its factorization.

31243010344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15723 (or 15712 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31243010344 its reverse (44301034213), we get a palindrome (75544044557).

The spelling of 31243010344 in words is "thirty-one billion, two hundred forty-three million, ten thousand, three hundred forty-four".