31022243424 has 144 divisors (see below), whose sum is σ = 90324234000. Its totient is φ = 10096432128.

The previous prime is 31022243423. The next prime is 31022243429. The reversal of 31022243424 is 42434222013.

31022243424 is a `hidden beast` number, since 3 + 1 + 0 + 222 + 434 + 2 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×31022243424² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31022243423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2525682 + ... + 2537934.

It is an arithmetic number, because the mean of its divisors is an integer number (627251625).

Almost surely, 2^31022243424 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 31022243424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45162117000).

31022243424 is an abundant number, since it is smaller than the sum of its proper divisors (59301990576).

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

31022243424 is a wasteful number, since it uses less digits than its factorization.

31022243424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12477 (or 12466 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 31022243424 its reverse (42434222013), we get a palindrome (73456465437).

The spelling of 31022243424 in words is "thirty-one billion, twenty-two million, two hundred forty-three thousand, four hundred twenty-four".