203861520234 has 96 divisors (see below), whose sum is σ = 470057986944. Its totient is φ = 63710824320.

The previous prime is 203861520223. The next prime is 203861520253. The reversal of 203861520234 is 432025168302.

203861520234 is a `hidden beast` number, since 2 + 0 + 3 + 8 + 615 + 2 + 0 + 2 + 34 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25909569 + ... + 25917435.

It is an arithmetic number, because the mean of its divisors is an integer number (4896437364).

Almost surely, 2^203861520234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203861520234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235028993472).

203861520234 is an abundant number, since it is smaller than the sum of its proper divisors (266196466710).

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

203861520234 is a wasteful number, since it uses less digits than its factorization.

203861520234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9132 (or 9129 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 203861520234 its reverse (432025168302), we get a palindrome (635886688536).

The spelling of 203861520234 in words is "two hundred three billion, eight hundred sixty-one million, five hundred twenty thousand, two hundred thirty-four".