403400123320 has 64 divisors (see below), whose sum is σ = 939082572000. Its totient is φ = 155773675008.

The previous prime is 403400123317. The next prime is 403400123333. The reversal of 403400123320 is 23321004304.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 403400123291 and 403400123300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9773286 + ... + 9814474.

Almost surely, 2^403400123320 is an apocalyptic number.

403400123320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403400123320 is an abundant number, since it is smaller than the sum of its proper divisors (535682448680).

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

403400123320 is a wasteful number, since it uses less digits than its factorization.

403400123320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49672 (or 49668 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 403400123320 its reverse (23321004304), we get a palindrome (426721127624).

The spelling of 403400123320 in words is "four hundred three billion, four hundred million, one hundred twenty-three thousand, three hundred twenty".