403404343313423 has 16 divisors (see below), whose sum is σ = 408351449986560. Its totient is φ = 398487254676000.

The previous prime is 403404343313353. The next prime is 403404343313459. The reversal of 403404343313423 is 324313343404304.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-403404343313423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403404343313473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2462989793 + ... + 2463153573.

It is an arithmetic number, because the mean of its divisors is an integer number (25521965624160).

Almost surely, 2^{403404343313423} is an apocalyptic number.

403404343313423 is a deficient number, since it is larger than the sum of its proper divisors (4947106673137).

403404343313423 is a wasteful number, since it uses less digits than its factorization.

403404343313423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255238.

The product of its (nonzero) digits is 1492992, while the sum is 41.

Adding to 403404343313423 its reverse (324313343404304), we get a palindrome (727717686717727).

The spelling of 403404343313423 in words is "four hundred three trillion, four hundred four billion, three hundred forty-three million, three hundred thirteen thousand, four hundred twenty-three".