211302311243 has 4 divisors (see below), whose sum is σ = 211329042600. Its totient is φ = 211275579888.

The previous prime is 211302311201. The next prime is 211302311251. The reversal of 211302311243 is 342113203112.

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

It is a cyclic number.

It is not a de Polignac number, because 211302311243 - 2⁶ = 211302311179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211302311293) 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, 13353818 + ... + 13369631.

It is an arithmetic number, because the mean of its divisors is an integer number (52832260650).

Almost surely, 2^211302311243 is an apocalyptic number.

211302311243 is a deficient number, since it is larger than the sum of its proper divisors (26731357).

211302311243 is an equidigital number, since it uses as much as digits as its factorization.

211302311243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26731356.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 211302311243 its reverse (342113203112), we get a palindrome (553415514355).

The spelling of 211302311243 in words is "two hundred eleven billion, three hundred two million, three hundred eleven thousand, two hundred forty-three".