211243232023 has 4 divisors (see below), whose sum is σ = 213788331288. Its totient is φ = 208698132760.

The previous prime is 211243232003. The next prime is 211243232089. The reversal of 211243232023 is 320232342112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211243232023 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 (211243232003) 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, 1272549508 + ... + 1272549673.

It is an arithmetic number, because the mean of its divisors is an integer number (53447082822).

Almost surely, 2^211243232023 is an apocalyptic number.

211243232023 is a deficient number, since it is larger than the sum of its proper divisors (2545099265).

211243232023 is an equidigital number, since it uses as much as digits as its factorization.

211243232023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545099264.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 211243232023 its reverse (320232342112), we get a palindrome (531475574135).

The spelling of 211243232023 in words is "two hundred eleven billion, two hundred forty-three million, two hundred thirty-two thousand, twenty-three".