11403623 has 12 divisors (see below), whose sum is σ = 14472072. Its totient is φ = 8885520.

The previous prime is 11403593. The next prime is 11403661. The reversal of 11403623 is 32630411.

It is not a de Polignac number, because 11403623 - 2⁶ = 11403559 is a prime.

It is a super-2 number, since 2×11403623² = 260085235052258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11403595 and 11403604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11403323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10040 + ... + 11117.

It is an arithmetic number, because the mean of its divisors is an integer number (1206006).

Almost surely, 2^11403623 is an apocalyptic number.

11403623 is a deficient number, since it is larger than the sum of its proper divisors (3068449).

11403623 is a wasteful number, since it uses less digits than its factorization.

11403623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21182 (or 21175 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 11403623 is about 3376.9250806022. The cubic root of 11403623 is about 225.0855510062.

The spelling of 11403623 in words is "eleven million, four hundred three thousand, six hundred twenty-three".