9731520050 has 54 divisors (see below), whose sum is σ = 21066401943. Its totient is φ = 3334847040.

The previous prime is 9731520049. The next prime is 9731520061. The reversal of 9731520050 is 500251379.

It can be written as a sum of positive squares in 5 ways, for example, as 5824895041 + 3906625009 = 76321^2 + 62503^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=69755.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9731519989 and 9731520016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4881854 + ... + 4883846.

Almost surely, 2^9731520050 is an apocalyptic number.

9731520050 is an abundant number, since it is smaller than the sum of its proper divisors (11334881893).

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

9731520050 is an equidigital number, since it uses as much as digits as its factorization.

9731520050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4012 (or 2007 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 9731520050 is about 98648.4670433352. The cubic root of 9731520050 is about 2134.9787689370.

Multiplying 9731520050 by its sum of digits (32), we get a square (311408641600 = 558040²).

The spelling of 9731520050 in words is "nine billion, seven hundred thirty-one million, five hundred twenty thousand, fifty".