11503397 has 4 divisors (see below), whose sum is σ = 11536896. Its totient is φ = 11469900.

The previous prime is 11503369. The next prime is 11503409. The reversal of 11503397 is 79330511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11503397 - 2¹⁰ = 11502373 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 (11503307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16229 + ... + 16922.

It is an arithmetic number, because the mean of its divisors is an integer number (2884224).

Almost surely, 2^11503397 is an apocalyptic number.

It is an amenable number.

11503397 is a deficient number, since it is larger than the sum of its proper divisors (33499).

11503397 is an equidigital number, since it uses as much as digits as its factorization.

11503397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33498.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 11503397 is about 3391.6658149057. The cubic root of 11503397 is about 225.7400946179.

The spelling of 11503397 in words is "eleven million, five hundred three thousand, three hundred ninety-seven".