11667431 has 4 divisors (see below), whose sum is σ = 11815200. Its totient is φ = 11519664.

The previous prime is 11667413. The next prime is 11667437. The reversal of 11667431 is 13476611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13476611 = 193 ⋅69827.

It is a cyclic number.

It is not a de Polignac number, because 11667431 - 2¹⁰ = 11666407 is a prime.

It is a super-2 number, since 2×11667431² = 272257892279522, 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 = 11667394 and 11667403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11667437) 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, 73766 + ... + 73923.

It is an arithmetic number, because the mean of its divisors is an integer number (2953800).

Almost surely, 2^11667431 is an apocalyptic number.

11667431 is a deficient number, since it is larger than the sum of its proper divisors (147769).

11667431 is an equidigital number, since it uses as much as digits as its factorization.

11667431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147768.

The product of its digits is 3024, while the sum is 29.

The square root of 11667431 is about 3415.7621404307. The cubic root of 11667431 is about 226.8080233707.

The spelling of 11667431 in words is "eleven million, six hundred sixty-seven thousand, four hundred thirty-one".