31122242443420 has 96 divisors (see below), whose sum is σ = 70659928120320. Its totient is φ = 11474289550080.

The previous prime is 31122242443417. The next prime is 31122242443429. The reversal of 31122242443420 is 2434424222113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31122242443429) 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, 296149485 + ... + 296254555.

It is an arithmetic number, because the mean of its divisors is an integer number (736040917920).

Almost surely, 2^{31122242443420} 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 31122242443420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35329964060160).

31122242443420 is an abundant number, since it is smaller than the sum of its proper divisors (39537685676900).

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

31122242443420 is a wasteful number, since it uses less digits than its factorization.

31122242443420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126203 (or 126201 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 31122242443420 its reverse (2434424222113), we get a palindrome (33556666665533).

The spelling of 31122242443420 in words is "thirty-one trillion, one hundred twenty-two billion, two hundred forty-two million, four hundred forty-three thousand, four hundred twenty".