30531315005 has 4 divisors (see below), whose sum is σ = 36637578012. Its totient is φ = 24425052000.

The previous prime is 30531314993. The next prime is 30531315011. The reversal of 30531315005 is 50051313503.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23763455716 + 6767859289 = 154154^2 + 82267^2 .

It is not a de Polignac number, because 30531315005 - 2²⁶ = 30464206141 is a prime.

It is a super-2 number, since 2×30531315005² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3053131496 + ... + 3053131505.

It is an arithmetic number, because the mean of its divisors is an integer number (9159394503).

Almost surely, 2^30531315005 is an apocalyptic number.

It is an amenable number.

30531315005 is a deficient number, since it is larger than the sum of its proper divisors (6106263007).

30531315005 is an equidigital number, since it uses as much as digits as its factorization.

30531315005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6106263006.

The product of its (nonzero) digits is 3375, while the sum is 26.

Adding to 30531315005 its reverse (50051313503), we get a palindrome (80582628508).

The spelling of 30531315005 in words is "thirty billion, five hundred thirty-one million, three hundred fifteen thousand, five".