30111311123 has 16 divisors (see below), whose sum is σ = 30999736320. Its totient is φ = 29238827904.

The previous prime is 30111311119. The next prime is 30111311129. The reversal of 30111311123 is 32111311103.

It is a cyclic number.

It is not a de Polignac number, because 30111311123 - 2² = 30111311119 is a prime.

It is a super-2 number, since 2×30111311123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30111311129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1451915 + ... + 1472507.

It is an arithmetic number, because the mean of its divisors is an integer number (1937483520).

Almost surely, 2^30111311123 is an apocalyptic number.

30111311123 is a deficient number, since it is larger than the sum of its proper divisors (888425197).

30111311123 is a wasteful number, since it uses less digits than its factorization.

30111311123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20978.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 30111311123 its reverse (32111311103), we get a palindrome (62222622226).

The spelling of 30111311123 in words is "thirty billion, one hundred eleven million, three hundred eleven thousand, one hundred twenty-three".