205642312314 has 32 divisors (see below), whose sum is σ = 423900800064. Its totient is φ = 66465256320.

The previous prime is 205642312307. The next prime is 205642312357. The reversal of 205642312314 is 413213246502.

It is a super-2 number, since 2×205642312314² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2524149 + ... + 2604344.

It is an arithmetic number, because the mean of its divisors is an integer number (13246900002).

Almost surely, 2^205642312314 is an apocalyptic number.

205642312314 is an abundant number, since it is smaller than the sum of its proper divisors (218258487750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205642312314 is a wasteful number, since it uses less digits than its factorization.

205642312314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5128702.

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 205642312314 its reverse (413213246502), we get a palindrome (618855558816).

The spelling of 205642312314 in words is "two hundred five billion, six hundred forty-two million, three hundred twelve thousand, three hundred fourteen".