205311143012 has 24 divisors (see below), whose sum is σ = 367180598400. Its totient is φ = 100426244256.

The previous prime is 205311142999. The next prime is 205311143033. The reversal of 205311143012 is 210341113502.

It is a super-3 number, since 3×205311143012³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2945918 + ... + 3014805.

It is an arithmetic number, because the mean of its divisors is an integer number (15299191600).

Almost surely, 2^205311143012 is an apocalyptic number.

It is an amenable number.

205311143012 is a deficient number, since it is larger than the sum of its proper divisors (161869455388).

205311143012 is a wasteful number, since it uses less digits than its factorization.

205311143012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5960915 (or 5960913 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 205311143012 its reverse (210341113502), we get a palindrome (415652256514).

The spelling of 205311143012 in words is "two hundred five billion, three hundred eleven million, one hundred forty-three thousand, twelve".