311004120422000 has 160 divisors (see below), whose sum is σ = 761594177710080. Its totient is φ = 122816117049600.

The previous prime is 311004120421997. The next prime is 311004120422027. The reversal of 311004120422000 is 224021400113.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1927993349 + ... + 1928154651.

It is an arithmetic number, because the mean of its divisors is an integer number (4759963610688).

Almost surely, 2^{311004120422000} 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 311004120422000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (380797088855040).

311004120422000 is an abundant number, since it is smaller than the sum of its proper divisors (450590057288080).

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

311004120422000 is a wasteful number, since it uses less digits than its factorization.

311004120422000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173608 (or 173592 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 311004120422000 its reverse (224021400113), we get a palindrome (311228141822113).

The spelling of 311004120422000 in words is "three hundred eleven trillion, four billion, one hundred twenty million, four hundred twenty-two thousand".