20213110311 has 32 divisors (see below), whose sum is σ = 27764985600. Its totient is φ = 13076363520.

The previous prime is 20213110289. The next prime is 20213110339. The reversal of 20213110311 is 11301131202.

It is a happy number.

It is not a de Polignac number, because 20213110311 - 2⁹ = 20213109799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213110361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3110776 + ... + 3117266.

It is an arithmetic number, because the mean of its divisors is an integer number (867655800).

Almost surely, 2^20213110311 is an apocalyptic number.

20213110311 is a deficient number, since it is larger than the sum of its proper divisors (7551875289).

20213110311 is a wasteful number, since it uses less digits than its factorization.

20213110311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6799.

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

Adding to 20213110311 its reverse (11301131202), we get a palindrome (31514241513).

The spelling of 20213110311 in words is "twenty billion, two hundred thirteen million, one hundred ten thousand, three hundred eleven".