2101311113 has 4 divisors (see below), whose sum is σ = 2292339408. Its totient is φ = 1910282820.

The previous prime is 2101311071. The next prime is 2101311169. The reversal of 2101311113 is 3111131012.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101311113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101311013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95514131 + ... + 95514152.

It is an arithmetic number, because the mean of its divisors is an integer number (573084852).

Almost surely, 2^2101311113 is an apocalyptic number.

It is an amenable number.

2101311113 is a deficient number, since it is larger than the sum of its proper divisors (191028295).

2101311113 is a wasteful number, since it uses less digits than its factorization.

2101311113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191028294.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 2101311113 is about 45840.0601330321. The cubic root of 2101311113 is about 1280.8456149388.

Adding to 2101311113 its reverse (3111131012), we get a palindrome (5212442125).

The spelling of 2101311113 in words is "two billion, one hundred one million, three hundred eleven thousand, one hundred thirteen".