30231315503505 has 12 divisors (see below), whose sum is σ = 52400946872820. Its totient is φ = 16123368268512.

The previous prime is 30231315503437. The next prime is 30231315503507. The reversal of 30231315503505 is 50530551313203.

30231315503505 is a `hidden beast` number, since 3 + 0 + 23 + 1 + 31 + 550 + 3 + 50 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7123182007041 + 23108133496464 = 2668929^2 + 4807092^2 .

It is not a de Polignac number, because 30231315503505 - 2³³ = 30222725568913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30231315503505.

It is not an unprimeable number, because it can be changed into a prime (30231315503507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 335903505550 + ... + 335903505639.

It is an arithmetic number, because the mean of its divisors is an integer number (4366745572735).

Almost surely, 2^{30231315503505} is an apocalyptic number.

It is an amenable number.

30231315503505 is a deficient number, since it is larger than the sum of its proper divisors (22169631369315).

30231315503505 is a wasteful number, since it uses less digits than its factorization.

30231315503505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671807011200 (or 671807011197 counting only the distinct ones).

The product of its (nonzero) digits is 101250, while the sum is 36.

Adding to 30231315503505 its reverse (50530551313203), we get a palindrome (80761866816708).

The spelling of 30231315503505 in words is "thirty trillion, two hundred thirty-one billion, three hundred fifteen million, five hundred three thousand, five hundred five".