211131312023 has 8 divisors (see below), whose sum is σ = 222759141120. Its totient is φ = 199555048440.

The previous prime is 211131312019. The next prime is 211131312043. The reversal of 211131312023 is 320213131112.

It is a happy number.

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 211131312023 - 2² = 211131312019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211131311986 and 211131312004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211131312013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12882965 + ... + 12899342.

It is an arithmetic number, because the mean of its divisors is an integer number (27844892640).

Almost surely, 2^211131312023 is an apocalyptic number.

211131312023 is a deficient number, since it is larger than the sum of its proper divisors (11627829097).

211131312023 is a wasteful number, since it uses less digits than its factorization.

211131312023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25782757.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 211131312023 its reverse (320213131112), we get a palindrome (531344443135).

The spelling of 211131312023 in words is "two hundred eleven billion, one hundred thirty-one million, three hundred twelve thousand, twenty-three".