30013013123 has 4 divisors (see below), whose sum is σ = 31047944640. Its totient is φ = 28978081608.

The previous prime is 30013013119. The next prime is 30013013153. The reversal of 30013013123 is 32131031003.

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

It is a cyclic number.

It is not a de Polignac number, because 30013013123 - 2² = 30013013119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30013013113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517465715 + ... + 517465772.

It is an arithmetic number, because the mean of its divisors is an integer number (7761986160).

Almost surely, 2^30013013123 is an apocalyptic number.

30013013123 is a deficient number, since it is larger than the sum of its proper divisors (1034931517).

30013013123 is a wasteful number, since it uses less digits than its factorization.

30013013123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034931516.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 30013013123 its reverse (32131031003), we get a palindrome (62144044126).

The spelling of 30013013123 in words is "thirty billion, thirteen million, thirteen thousand, one hundred twenty-three".