30012131123 has 24 divisors (see below), whose sum is σ = 33407020080. Its totient is φ = 26801331840.

The previous prime is 30012131119. The next prime is 30012131129. The reversal of 30012131123 is 32113121003.

It is not a de Polignac number, because 30012131123 - 2² = 30012131119 is a prime.

It is a super-2 number, since 2×30012131123² (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 (30012131129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3180953 + ... + 3190373.

It is an arithmetic number, because the mean of its divisors is an integer number (1391959170).

Almost surely, 2^30012131123 is an apocalyptic number.

30012131123 is a deficient number, since it is larger than the sum of its proper divisors (3394888957).

30012131123 is a wasteful number, since it uses less digits than its factorization.

30012131123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9687 (or 9650 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 30012131123 its reverse (32113121003), we get a palindrome (62125252126).

The spelling of 30012131123 in words is "thirty billion, twelve million, one hundred thirty-one thousand, one hundred twenty-three".