11648431 has 4 divisors (see below), whose sum is σ = 11763864. Its totient is φ = 11533000.

The previous prime is 11648423. The next prime is 11648437. The reversal of 11648431 is 13484611.

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 11648431 - 2³ = 11648423 is a prime.

It is a super-2 number, since 2×11648431² = 271371889523522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11648431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11648437) 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, 57565 + ... + 57766.

It is an arithmetic number, because the mean of its divisors is an integer number (2940966).

Almost surely, 2^11648431 is an apocalyptic number.

11648431 is a deficient number, since it is larger than the sum of its proper divisors (115433).

11648431 is a wasteful number, since it uses less digits than its factorization.

11648431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115432.

The product of its digits is 2304, while the sum is 28.

The square root of 11648431 is about 3412.9797831221. The cubic root of 11648431 is about 226.6848401903.

The spelling of 11648431 in words is "eleven million, six hundred forty-eight thousand, four hundred thirty-one".