31323234444 has 24 divisors (see below), whose sum is σ = 73191828528. Its totient is φ = 10426180800.

The previous prime is 31323234443. The next prime is 31323234469. The reversal of 31323234444 is 44443232313.

It is a happy number.

It is a super-2 number, since 2×31323234444² (a number of 22 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (31323234443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1853407 + ... + 1870230.

It is an arithmetic number, because the mean of its divisors is an integer number (3049659522).

Almost surely, 2^31323234444 is an apocalyptic number.

It is an amenable number.

31323234444 is an abundant number, since it is smaller than the sum of its proper divisors (41868594084).

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

31323234444 is a wasteful number, since it uses less digits than its factorization.

31323234444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3724345 (or 3724343 counting only the distinct ones).

The product of its digits is 82944, while the sum is 33.

Adding to 31323234444 its reverse (44443232313), we get a palindrome (75766466757).

The spelling of 31323234444 in words is "thirty-one billion, three hundred twenty-three million, two hundred thirty-four thousand, four hundred forty-four".