211023220313 has 4 divisors (see below), whose sum is σ = 211030761600. Its totient is φ = 211015679028.

The previous prime is 211023220189. The next prime is 211023220337. The reversal of 211023220313 is 313022320112.

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 not a de Polignac number, because 211023220313 - 2²⁴ = 211006443097 is a prime.

It is a super-2 number, since 2×211023220313² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211023220613) 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, 3728513 + ... + 3784686.

It is an arithmetic number, because the mean of its divisors is an integer number (52757690400).

Almost surely, 2^211023220313 is an apocalyptic number.

It is an amenable number.

211023220313 is a deficient number, since it is larger than the sum of its proper divisors (7541287).

211023220313 is an equidigital number, since it uses as much as digits as its factorization.

211023220313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7541286.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 211023220313 its reverse (313022320112), we get a palindrome (524045540425).

The spelling of 211023220313 in words is "two hundred eleven billion, twenty-three million, two hundred twenty thousand, three hundred thirteen".