11427531 has 8 divisors (see below), whose sum is σ = 16038720. Its totient is φ = 7217352.

The previous prime is 11427517. The next prime is 11427547. The reversal of 11427531 is 13572411.

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

It is not a de Polignac number, because 11427531 - 2⁶ = 11427467 is a prime.

It is a super-2 number, since 2×11427531² = 261176929511922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11427331) 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, 100185 + ... + 100298.

It is an arithmetic number, because the mean of its divisors is an integer number (2004840).

Almost surely, 2^11427531 is an apocalyptic number.

11427531 is a deficient number, since it is larger than the sum of its proper divisors (4611189).

11427531 is a wasteful number, since it uses less digits than its factorization.

11427531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200505.

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

The square root of 11427531 is about 3380.4631339507. The cubic root of 11427531 is about 225.2427404952.

Adding to 11427531 its reverse (13572411), we get a palindrome (24999942).

The spelling of 11427531 in words is "eleven million, four hundred twenty-seven thousand, five hundred thirty-one".