31212323112000 has 448 divisors, whose sum is σ = 109279562146560. Its totient is φ = 7827646464000.

The previous prime is 31212323111989. The next prime is 31212323112023. The reversal of 31212323112000 is 21132321213.

It is a super-2 number, since 2×31212323112000² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 62222190 + ... + 62721810.

Almost surely, 2^{31212323112000} is an apocalyptic number.

31212323112000 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 31212323112000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54639781073280).

31212323112000 is an abundant number, since it is smaller than the sum of its proper divisors (78067239034560).

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

31212323112000 is a wasteful number, since it uses less digits than its factorization.

31212323112000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499807 (or 499787 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31212323112000 its reverse (21132321213), we get a palindrome (31233455433213).

The spelling of 31212323112000 in words is "thirty-one trillion, two hundred twelve billion, three hundred twenty-three million, one hundred twelve thousand".