30310312123 has 32 divisors (see below), whose sum is σ = 37892341760. Its totient is φ = 23606069760.

The previous prime is 30310312121. The next prime is 30310312139. The reversal of 30310312123 is 32121301303.

It is not a de Polignac number, because 30310312123 - 2¹ = 30310312121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30310312123.

It is not an unprimeable number, because it can be changed into a prime (30310312121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2416438 + ... + 2428948.

It is an arithmetic number, because the mean of its divisors is an integer number (1184135680).

Almost surely, 2^30310312123 is an apocalyptic number.

30310312123 is a deficient number, since it is larger than the sum of its proper divisors (7582029637).

30310312123 is a wasteful number, since it uses less digits than its factorization.

30310312123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12947.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 30310312123 its reverse (32121301303), we get a palindrome (62431613426).

The spelling of 30310312123 in words is "thirty billion, three hundred ten million, three hundred twelve thousand, one hundred twenty-three".