201531000120250 has 16 divisors (see below), whose sum is σ = 377266032225576. Its totient is φ = 80612400048000.

The previous prime is 201531000120239. The next prime is 201531000120313. The reversal of 201531000120250 is 52021000135102.

It can be written as a sum of positive squares in 4 ways, for example, as 120806543387209 + 80724456733041 = 10991203^2 + 8984679^2 .

It is a super-2 number, since 2×201531000120250² (a number of 29 digits) contains 22 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, 403061999991 + ... + 403062000490.

Almost surely, 2^{201531000120250} is an apocalyptic number.

201531000120250 is a deficient number, since it is larger than the sum of its proper divisors (175735032105326).

201531000120250 is an equidigital number, since it uses as much as digits as its factorization.

201531000120250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806124000498 (or 806124000488 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 201531000120250 its reverse (52021000135102), we get a palindrome (253552000255352).

The spelling of 201531000120250 in words is "two hundred one trillion, five hundred thirty-one billion, one hundred twenty thousand, two hundred fifty".