211312220313 has 16 divisors (see below), whose sum is σ = 290459949696. Its totient is φ = 136563423360.

The previous prime is 211312220303. The next prime is 211312220341. The reversal of 211312220313 is 313022213112.

It is not a de Polignac number, because 211312220313 - 2⁸ = 211312220057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211312220313.

It is not an unprimeable number, because it can be changed into a prime (211312220303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5451981 + ... + 5490602.

It is an arithmetic number, because the mean of its divisors is an integer number (18153746856).

Almost surely, 2^211312220313 is an apocalyptic number.

It is an amenable number.

211312220313 is a deficient number, since it is larger than the sum of its proper divisors (79147729383).

211312220313 is a wasteful number, since it uses less digits than its factorization.

211312220313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10942784.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 211312220313 its reverse (313022213112), we get a palindrome (524334433425).

The spelling of 211312220313 in words is "two hundred eleven billion, three hundred twelve million, two hundred twenty thousand, three hundred thirteen".