2311322002000 has 160 divisors (see below), whose sum is σ = 6103106590464. Its totient is φ = 839617856000.

The previous prime is 2311322001959. The next prime is 2311322002063. The reversal of 2311322002000 is 2002231132.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 21572562 + ... + 21679438.

Almost surely, 2^{2311322002000} is an apocalyptic number.

2311322002000 is a gapful number since it is divisible by the number (20) 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 2311322002000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3051553295232).

2311322002000 is an abundant number, since it is smaller than the sum of its proper divisors (3791784588464).

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

2311322002000 is a wasteful number, since it uses less digits than its factorization.

2311322002000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107894 (or 107878 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 2311322002000 its reverse (2002231132), we get a palindrome (2313324233132).

It can be divided in two parts, 231 and 1322002000, that added together give a palindrome (1322002231).

The spelling of 2311322002000 in words is "two trillion, three hundred eleven billion, three hundred twenty-two million, two thousand".