211311230302 has 16 divisors (see below), whose sum is σ = 319410270432. Its totient is φ = 104844267520.

The previous prime is 211311230293. The next prime is 211311230303. The reversal of 211311230302 is 203032113112.

It is a super-2 number, since 2×211311230302² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211311230302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211311230303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 646399 + ... + 916762.

It is an arithmetic number, because the mean of its divisors is an integer number (19963141902).

Almost surely, 2^211311230302 is an apocalyptic number.

211311230302 is a deficient number, since it is larger than the sum of its proper divisors (108099040130).

211311230302 is a wasteful number, since it uses less digits than its factorization.

211311230302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563683.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 211311230302 its reverse (203032113112), we get a palindrome (414343343414).

The spelling of 211311230302 in words is "two hundred eleven billion, three hundred eleven million, two hundred thirty thousand, three hundred two".