31421324202000 has 320 divisors, whose sum is σ = 106271568898560. Its totient is φ = 7976140032000.

The previous prime is 31421324201977. The next prime is 31421324202013. The reversal of 31421324202000 is 20242312413.

It is a happy number.

It is a super-2 number, since 2×31421324202000² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11082294 + ... + 13625706.

It is an arithmetic number, because the mean of its divisors is an integer number (332098652808).

Almost surely, 2^{31421324202000} is an apocalyptic number.

31421324202000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31421324202000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53135784449280).

31421324202000 is an abundant number, since it is smaller than the sum of its proper divisors (74850244696560).

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

31421324202000 is a wasteful number, since it uses less digits than its factorization.

31421324202000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543539 (or 2543523 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 31421324202000 its reverse (20242312413), we get a palindrome (31441566514413).

The spelling of 31421324202000 in words is "thirty-one trillion, four hundred twenty-one billion, three hundred twenty-four million, two hundred two thousand".