211311030113 has 8 divisors (see below), whose sum is σ = 211561755048. Its totient is φ = 211060433664.

The previous prime is 211311030109. The next prime is 211311030121. The reversal of 211311030113 is 311030113112.

It can be written as a sum of positive squares in 4 ways, for example, as 5079697984 + 206231332129 = 71272^2 + 454127^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211311030113 - 2² = 211311030109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211311030091 and 211311030100.

It is not an unprimeable number, because it can be changed into a prime (211311030103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3483995 + ... + 3544127.

It is an arithmetic number, because the mean of its divisors is an integer number (26445219381).

Almost surely, 2^211311030113 is an apocalyptic number.

It is an amenable number.

211311030113 is a deficient number, since it is larger than the sum of its proper divisors (250724935).

211311030113 is a wasteful number, since it uses less digits than its factorization.

211311030113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64243.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 211311030113 its reverse (311030113112), we get a palindrome (522341143225).

The spelling of 211311030113 in words is "two hundred eleven billion, three hundred eleven million, thirty thousand, one hundred thirteen".