2311323121100 has 36 divisors (see below), whose sum is σ = 5732081342064. Its totient is φ = 792453641280.

The previous prime is 2311323121097. The next prime is 2311323121103. The reversal of 2311323121100 is 11213231132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2311323121097) and next prime (2311323121103).

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 (2311323121103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1650944387 + ... + 1650945786.

It is an arithmetic number, because the mean of its divisors is an integer number (159224481724).

Almost surely, 2^{2311323121100} is an apocalyptic number.

2311323121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311323121100 is an abundant number, since it is smaller than the sum of its proper divisors (3420758220964).

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

2311323121100 is a wasteful number, since it uses less digits than its factorization.

2311323121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3301890194 (or 3301890187 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2311323121100 its reverse (11213231132), we get a palindrome (2322536352232).

The spelling of 2311323121100 in words is "two trillion, three hundred eleven billion, three hundred twenty-three million, one hundred twenty-one thousand, one hundred".