11403234405 has 16 divisors (see below), whose sum is σ = 20272416960. Its totient is φ = 6081724944.

The previous prime is 11403234397. The next prime is 11403234407. The reversal of 11403234405 is 50443230411.

It is a happy number.

It is not a de Polignac number, because 11403234405 - 2³ = 11403234397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11403234407) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 42234067 + ... + 42234336.

It is an arithmetic number, because the mean of its divisors is an integer number (1267026060).

Almost surely, 2^11403234405 is an apocalyptic number.

11403234405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11403234405 is a deficient number, since it is larger than the sum of its proper divisors (8869182555).

11403234405 is an equidigital number, since it uses as much as digits as its factorization.

11403234405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84468417 (or 84468411 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 11403234405 its reverse (50443230411), we get a palindrome (61846464816).

The spelling of 11403234405 in words is "eleven billion, four hundred three million, two hundred thirty-four thousand, four hundred five".