30431130123 has 16 divisors (see below), whose sum is σ = 40739961600. Its totient is φ = 20204971680.

The previous prime is 30431130089. The next prime is 30431130133. The reversal of 30431130123 is 32103113403.

It is not a de Polignac number, because 30431130123 - 2¹⁸ = 30430867979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30431130123.

It is not an unprimeable number, because it can be changed into a prime (30431130133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1133388 + ... + 1159926.

It is an arithmetic number, because the mean of its divisors is an integer number (2546247600).

Almost surely, 2^30431130123 is an apocalyptic number.

30431130123 is a deficient number, since it is larger than the sum of its proper divisors (10308831477).

30431130123 is a wasteful number, since it uses less digits than its factorization.

30431130123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28082.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 30431130123 its reverse (32103113403), we get a palindrome (62534243526).

The spelling of 30431130123 in words is "thirty billion, four hundred thirty-one million, one hundred thirty thousand, one hundred twenty-three".