205031250102 has 16 divisors (see below), whose sum is σ = 468642857472. Its totient is φ = 58580357160.

The previous prime is 205031250089. The next prime is 205031250119. The reversal of 205031250102 is 201052130502.

205031250102 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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, 2440848174 + ... + 2440848257.

It is an arithmetic number, because the mean of its divisors is an integer number (29290178592).

Almost surely, 2^205031250102 is an apocalyptic number.

205031250102 is an abundant number, since it is smaller than the sum of its proper divisors (263611607370).

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

205031250102 is a wasteful number, since it uses less digits than its factorization.

205031250102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4881696443.

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 205031250102 its reverse (201052130502), we get a palindrome (406083380604).

The spelling of 205031250102 in words is "two hundred five billion, thirty-one million, two hundred fifty thousand, one hundred two".