31103020322000 has 640 divisors, whose sum is σ = 85279741747200. Its totient is φ = 10873384704000.

The previous prime is 31103020321991. The next prime is 31103020322041. The reversal of 31103020322000 is 22302030113.

It is a self number, because there is not a number n which added to its sum of digits gives 31103020322000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 43868857646 + ... + 43868858354.

It is an arithmetic number, because the mean of its divisors is an integer number (133249596480).

Almost surely, 2^{31103020322000} 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 31103020322000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42639870873600).

31103020322000 is an abundant number, since it is smaller than the sum of its proper divisors (54176721425200).

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

31103020322000 is a wasteful number, since it uses less digits than its factorization.

31103020322000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452 (or 1436 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31103020322000 its reverse (22302030113), we get a palindrome (31125322352113).

The spelling of 31103020322000 in words is "thirty-one trillion, one hundred three billion, twenty million, three hundred twenty-two thousand".