311440120002 has 24 divisors (see below), whose sum is σ = 736131193200. Its totient is φ = 94375793880.

The previous prime is 311440119983. The next prime is 311440120153. The reversal of 311440120002 is 200021044113.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 786464752 + ... + 786465147.

It is an arithmetic number, because the mean of its divisors is an integer number (30672133050).

Almost surely, 2^311440120002 is an apocalyptic number.

311440120002 is an abundant number, since it is smaller than the sum of its proper divisors (424691073198).

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

311440120002 is a wasteful number, since it uses less digits than its factorization.

311440120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572929918 (or 1572929915 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 311440120002 its reverse (200021044113), we get a palindrome (511461164115).

The spelling of 311440120002 in words is "three hundred eleven billion, four hundred forty million, one hundred twenty thousand, two".