30113131123 has 4 divisors (see below), whose sum is σ = 30113839768. Its totient is φ = 30112422480.

The previous prime is 30113131121. The next prime is 30113131129. The reversal of 30113131123 is 32113131103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32113131103 = 397 ⋅80889499.

It is a cyclic number.

It is not a de Polignac number, because 30113131123 - 2¹ = 30113131121 is a prime.

It is a super-2 number, since 2×30113131123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30113131123.

It is not an unprimeable number, because it can be changed into a prime (30113131121) 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, 286218 + ... + 377023.

It is an arithmetic number, because the mean of its divisors is an integer number (7528459942).

Almost surely, 2^30113131123 is an apocalyptic number.

30113131123 is a deficient number, since it is larger than the sum of its proper divisors (708645).

30113131123 is an equidigital number, since it uses as much as digits as its factorization.

30113131123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708644.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 30113131123 its reverse (32113131103), we get a palindrome (62226262226).

The spelling of 30113131123 in words is "thirty billion, one hundred thirteen million, one hundred thirty-one thousand, one hundred twenty-three".