123400331030 has 16 divisors (see below), whose sum is σ = 222124924944. Its totient is φ = 49359170400.

The previous prime is 123400331029. The next prime is 123400331059. The reversal of 123400331030 is 30133004321.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123400330993 and 123400331011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 658880 + ... + 825180.

It is an arithmetic number, because the mean of its divisors is an integer number (13882807809).

Almost surely, 2^123400331030 is an apocalyptic number.

123400331030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123400331030 is a deficient number, since it is larger than the sum of its proper divisors (98724593914).

123400331030 is a wasteful number, since it uses less digits than its factorization.

123400331030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240511.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 123400331030 its reverse (30133004321), we get a palindrome (153533335351).

The spelling of 123400331030 in words is "one hundred twenty-three billion, four hundred million, three hundred thirty-one thousand, thirty".