30231303123 has 32 divisors (see below), whose sum is σ = 49619046400. Its totient is φ = 15985208736.

The previous prime is 30231303119. The next prime is 30231303131. The reversal of 30231303123 is 32130313203.

It is not a de Polignac number, because 30231303123 - 2² = 30231303119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 30231303123.

It is not an unprimeable number, because it can be changed into a prime (30231303103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 863863 + ... + 898176.

It is an arithmetic number, because the mean of its divisors is an integer number (1550595200).

Almost surely, 2^30231303123 is an apocalyptic number.

30231303123 is a deficient number, since it is larger than the sum of its proper divisors (19387743277).

30231303123 is a wasteful number, since it uses less digits than its factorization.

30231303123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762111.

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

Adding to 30231303123 its reverse (32130313203), we get a palindrome (62361616326).

The spelling of 30231303123 in words is "thirty billion, two hundred thirty-one million, three hundred three thousand, one hundred twenty-three".