123431304034 has 4 divisors (see below), whose sum is σ = 185146956054. Its totient is φ = 61715652016.

The previous prime is 123431304001. The next prime is 123431304043. The reversal of 123431304034 is 430403134321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 123198894009 + 232410025 = 350997^2 + 15245^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123431303993 and 123431304011.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 30857826007 + ... + 30857826010.

Almost surely, 2^123431304034 is an apocalyptic number.

123431304034 is a deficient number, since it is larger than the sum of its proper divisors (61715652020).

123431304034 is an equidigital number, since it uses as much as digits as its factorization.

123431304034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61715652019.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 123431304034 its reverse (430403134321), we get a palindrome (553834438355).

The spelling of 123431304034 in words is "one hundred twenty-three billion, four hundred thirty-one million, three hundred four thousand, thirty-four".