211130311013 has 4 divisors (see below), whose sum is σ = 211131845388. Its totient is φ = 211128776640.

The previous prime is 211130311009. The next prime is 211130311031. The reversal of 211130311013 is 310113031112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58000533889 + 153129777124 = 240833^2 + 391318^2 .

It is a cyclic number.

It is not a de Polignac number, because 211130311013 - 2² = 211130311009 is a prime.

It is a super-2 number, since 2×211130311013² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211130310982 and 211130311000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211130311033) 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, 537956 + ... + 843597.

It is an arithmetic number, because the mean of its divisors is an integer number (52782961347).

Almost surely, 2^211130311013 is an apocalyptic number.

It is an amenable number.

211130311013 is a deficient number, since it is larger than the sum of its proper divisors (1534375).

211130311013 is a wasteful number, since it uses less digits than its factorization.

211130311013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534374.

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

Adding to 211130311013 its reverse (310113031112), we get a palindrome (521243342125).

The spelling of 211130311013 in words is "two hundred eleven billion, one hundred thirty million, three hundred eleven thousand, thirteen".