31123244244 has 48 divisors (see below), whose sum is σ = 73140576768. Its totient is φ = 10300321248.

The previous prime is 31123244237. The next prime is 31123244261. The reversal of 31123244244 is 44244232113.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1809067 + ... + 1826189.

It is an arithmetic number, because the mean of its divisors is an integer number (1523762016).

Almost surely, 2^31123244244 is an apocalyptic number.

It is an amenable number.

31123244244 is an abundant number, since it is smaller than the sum of its proper divisors (42017332524).

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

31123244244 is a wasteful number, since it uses less digits than its factorization.

31123244244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18204 (or 18202 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

Adding to 31123244244 its reverse (44244232113), we get a palindrome (75367476357).

The spelling of 31123244244 in words is "thirty-one billion, one hundred twenty-three million, two hundred forty-four thousand, two hundred forty-four".