30031233123 has 16 divisors (see below), whose sum is σ = 42156033920. Its totient is φ = 18963974016.

The previous prime is 30031233121. The next prime is 30031233137. The reversal of 30031233123 is 32133213003.

It is not a de Polignac number, because 30031233123 - 2¹ = 30031233121 is a prime.

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 30031233123.

It is not an unprimeable number, because it can be changed into a prime (30031233121) 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, 334836 + ... + 414942.

It is an arithmetic number, because the mean of its divisors is an integer number (2634752120).

Almost surely, 2^30031233123 is an apocalyptic number.

30031233123 is a deficient number, since it is larger than the sum of its proper divisors (12124800797).

30031233123 is a wasteful number, since it uses less digits than its factorization.

30031233123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86706.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 30031233123 its reverse (32133213003), we get a palindrome (62164446126).

The spelling of 30031233123 in words is "thirty billion, thirty-one million, two hundred thirty-three thousand, one hundred twenty-three".