211312963 has 4 divisors (see below), whose sum is σ = 211634280. Its totient is φ = 210991648.

The previous prime is 211312939. The next prime is 211313017. The reversal of 211312963 is 369213112.

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 211312963 - 2⁵ = 211312931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211312903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159670 + ... + 160987.

It is an arithmetic number, because the mean of its divisors is an integer number (52908570).

Almost surely, 2^211312963 is an apocalyptic number.

211312963 is a deficient number, since it is larger than the sum of its proper divisors (321317).

211312963 is an equidigital number, since it uses as much as digits as its factorization.

211312963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321316.

The product of its digits is 1944, while the sum is 28.

The square root of 211312963 is about 14536.6076854265. The cubic root of 211312963 is about 595.6283764632.

The spelling of 211312963 in words is "two hundred eleven million, three hundred twelve thousand, nine hundred sixty-three".