31224033002140 has 96 divisors (see below), whose sum is σ = 73287186194880. Its totient is φ = 11075584819200.

The previous prime is 31224033002093. The next prime is 31224033002143. The reversal of 31224033002140 is 4120033042213.

It is a super-2 number, since 2×31224033002140² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31224033002143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60076024 + ... + 60593536.

It is an arithmetic number, because the mean of its divisors is an integer number (763408189530).

Almost surely, 2^{31224033002140} 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 31224033002140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36643593097440).

31224033002140 is an abundant number, since it is smaller than the sum of its proper divisors (42063153192740).

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

31224033002140 is a wasteful number, since it uses less digits than its factorization.

31224033002140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524263 (or 524261 counting only the distinct ones).

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

Adding to 31224033002140 its reverse (4120033042213), we get a palindrome (35344066044353).

The spelling of 31224033002140 in words is "thirty-one trillion, two hundred twenty-four billion, thirty-three million, two thousand, one hundred forty".