30123000005 has 32 divisors (see below), whose sum is σ = 41952583680. Its totient is φ = 20335613760.

The previous prime is 30122999999. The next prime is 30123000041. The reversal of 30123000005 is 50000032103.

It is not a de Polignac number, because 30123000005 - 2⁸ = 30122999749 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6232940 + ... + 6237770.

It is an arithmetic number, because the mean of its divisors is an integer number (1311018240).

Almost surely, 2^30123000005 is an apocalyptic number.

30123000005 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30123000005 is a deficient number, since it is larger than the sum of its proper divisors (11829583675).

30123000005 is a wasteful number, since it uses less digits than its factorization.

30123000005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7569.

The product of its (nonzero) digits is 90, while the sum is 14.

Adding to 30123000005 its reverse (50000032103), we get a palindrome (80123032108).

The spelling of 30123000005 in words is "thirty billion, one hundred twenty-three million, five", and thus it is an aban number.