11531427 has 8 divisors (see below), whose sum is σ = 15488016. Its totient is φ = 7631232.

The previous prime is 11531419. The next prime is 11531431. The reversal of 11531427 is 72413511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11531427 - 2³ = 11531419 is a prime.

It is a super-3 number, since 3×11531427³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11531397 and 11531406.

It is not an unprimeable number, because it can be changed into a prime (11531407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13618 + ... + 14439.

It is an arithmetic number, because the mean of its divisors is an integer number (1936002).

Almost surely, 2^11531427 is an apocalyptic number.

11531427 is a deficient number, since it is larger than the sum of its proper divisors (3956589).

11531427 is a wasteful number, since it uses less digits than its factorization.

11531427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28197.

The product of its digits is 840, while the sum is 24.

The square root of 11531427 is about 3395.7954885417. The cubic root of 11531427 is about 225.9232973842.

Adding to 11531427 its reverse (72413511), we get a palindrome (83944938).

The spelling of 11531427 in words is "eleven million, five hundred thirty-one thousand, four hundred twenty-seven".