2111321310 has 96 divisors (see below), whose sum is σ = 6020075520. Its totient is φ = 472304448.

The previous prime is 2111321297. The next prime is 2111321321. The reversal of 2111321310 is 131231112.

It is a happy number.

It is a super-2 number, since 2×2111321310² = 8915355348120232200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2111321310.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53811 + ... + 84369.

It is an arithmetic number, because the mean of its divisors is an integer number (62709120).

Almost surely, 2^2111321310 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111321310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3010037760).

2111321310 is an abundant number, since it is smaller than the sum of its proper divisors (3908754210).

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

2111321310 is a wasteful number, since it uses less digits than its factorization.

2111321310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30630 (or 30623 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 2111321310 is about 45949.1165312240. The cubic root of 2111321310 is about 1282.8762853632.

Adding to 2111321310 its reverse (131231112), we get a palindrome (2242552422).

The spelling of 2111321310 in words is "two billion, one hundred eleven million, three hundred twenty-one thousand, three hundred ten".