204311220243310 has 16 divisors (see below), whose sum is σ = 367761060363600. Its totient is φ = 81724296113856.

The previous prime is 204311220243281. The next prime is 204311220243313. The reversal of 204311220243310 is 13342022113402.

It is a super-2 number, since 2×204311220243310² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204311220243313) 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, 19487880 + ... + 28078459.

It is an arithmetic number, because the mean of its divisors is an integer number (22985066272725).

Almost surely, 2^{204311220243310} is an apocalyptic number.

204311220243310 is a deficient number, since it is larger than the sum of its proper divisors (163449840120290).

204311220243310 is a wasteful number, since it uses less digits than its factorization.

204311220243310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47995875.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 204311220243310 its reverse (13342022113402), we get a palindrome (217653242356712).

The spelling of 204311220243310 in words is "two hundred four trillion, three hundred eleven billion, two hundred twenty million, two hundred forty-three thousand, three hundred ten".