311234420000 has 240 divisors, whose sum is σ = 903307249152. Its totient is φ = 103265280000.

The previous prime is 311234419963. The next prime is 311234420009. The reversal of 311234420000 is 24432113.

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

It is not an unprimeable number, because it can be changed into a prime (311234420009) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4304144 + ... + 4375856.

Almost surely, 2^311234420000 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 311234420000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (451653624576).

311234420000 is an abundant number, since it is smaller than the sum of its proper divisors (592072829152).

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

311234420000 is an equidigital number, since it uses as much as digits as its factorization.

311234420000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71781 (or 71758 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 311234420000 its reverse (24432113), we get a palindrome (311258852113).

The spelling of 311234420000 in words is "three hundred eleven billion, two hundred thirty-four million, four hundred twenty thousand".