31130311244 has 18 divisors (see below), whose sum is σ = 55839197652. Its totient is φ = 15185514400.

The previous prime is 31130311207. The next prime is 31130311249. The reversal of 31130311244 is 44211303113.

It is not an unprimeable number, because it can be changed into a prime (31130311249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2308142 + ... + 2321589.

Almost surely, 2^31130311244 is an apocalyptic number.

It is an amenable number.

31130311244 is a deficient number, since it is larger than the sum of its proper divisors (24708886408).

31130311244 is a wasteful number, since it uses less digits than its factorization.

31130311244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4629817 (or 4629774 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31130311244 its reverse (44211303113), we get a palindrome (75341614357).

The spelling of 31130311244 in words is "thirty-one billion, one hundred thirty million, three hundred eleven thousand, two hundred forty-four".