11631403 has 4 divisors (see below), whose sum is σ = 13293040. Its totient is φ = 9969768.

The previous prime is 11631391. The next prime is 11631409. The reversal of 11631403 is 30413611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11631403 - 2⁹ = 11630891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11631409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830808 + ... + 830821.

It is an arithmetic number, because the mean of its divisors is an integer number (3323260).

Almost surely, 2^11631403 is an apocalyptic number.

11631403 is a deficient number, since it is larger than the sum of its proper divisors (1661637).

11631403 is an equidigital number, since it uses as much as digits as its factorization.

11631403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661636.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 11631403 is about 3410.4842764628. The cubic root of 11631403 is about 226.5743282576.

The spelling of 11631403 in words is "eleven million, six hundred thirty-one thousand, four hundred three".