20213012311 has 8 divisors (see below), whose sum is σ = 20560804560. Its totient is φ = 19865393472.

The previous prime is 20213012293. The next prime is 20213012333. The reversal of 20213012311 is 11321031202.

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 20213012311 - 2²¹ = 20210915159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213012711) 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, 203781 + ... + 286273.

It is an arithmetic number, because the mean of its divisors is an integer number (2570100570).

Almost surely, 2^20213012311 is an apocalyptic number.

20213012311 is a deficient number, since it is larger than the sum of its proper divisors (347792249).

20213012311 is an equidigital number, since it uses as much as digits as its factorization.

20213012311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86705.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20213012311 its reverse (11321031202), we get a palindrome (31534043513).

The spelling of 20213012311 in words is "twenty billion, two hundred thirteen million, twelve thousand, three hundred eleven".