123403033340 has 24 divisors (see below), whose sum is σ = 261817986192. Its totient is φ = 48852334080.

The previous prime is 123403033333. The next prime is 123403033343. The reversal of 123403033340 is 43330304321.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123403033343) by changing a digit.

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, 31802966 + ... + 31806845.

It is an arithmetic number, because the mean of its divisors is an integer number (10909082758).

Almost surely, 2^123403033340 is an apocalyptic number.

123403033340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123403033340 is an abundant number, since it is smaller than the sum of its proper divisors (138414952852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123403033340 is a wasteful number, since it uses less digits than its factorization.

123403033340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63609917 (or 63609915 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 26.

Adding to 123403033340 its reverse (43330304321), we get a palindrome (166733337661).

The spelling of 123403033340 in words is "one hundred twenty-three billion, four hundred three million, thirty-three thousand, three hundred forty".