211312023331 has 4 divisors (see below), whose sum is σ = 211312975392. Its totient is φ = 211311071272.

The previous prime is 211312023313. The next prime is 211312023337. The reversal of 211312023331 is 133320213112.

211312023331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 211312023331 - 2²⁵ = 211278468899 is a prime.

It is a super-2 number, since 2×211312023331² (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 (211312023337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52521 + ... + 652213.

It is an arithmetic number, because the mean of its divisors is an integer number (52828243848).

Almost surely, 2^211312023331 is an apocalyptic number.

211312023331 is a deficient number, since it is larger than the sum of its proper divisors (952061).

211312023331 is an equidigital number, since it uses as much as digits as its factorization.

211312023331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952060.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 211312023331 its reverse (133320213112), we get a palindrome (344632236443).

The spelling of 211312023331 in words is "two hundred eleven billion, three hundred twelve million, twenty-three thousand, three hundred thirty-one".