11506231 has 8 divisors (see below), whose sum is σ = 12589200. Its totient is φ = 10429440.

The previous prime is 11506213. The next prime is 11506249. The reversal of 11506231 is 13260511.

It is an interprime number because it is at equal distance from previous prime (11506213) and next prime (11506249).

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

It is a cyclic number.

It is not a de Polignac number, because 11506231 - 2¹¹ = 11504183 is a prime.

It is a super-2 number, since 2×11506231² = 264786703650722, 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 = 11506199 and 11506208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11506531) 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, 2935 + ... + 5623.

It is an arithmetic number, because the mean of its divisors is an integer number (1573650).

Almost surely, 2^11506231 is an apocalyptic number.

11506231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11506231 is a deficient number, since it is larger than the sum of its proper divisors (1082969).

11506231 is a wasteful number, since it uses less digits than its factorization.

11506231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3089.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 11506231 is about 3392.0835779798. The cubic root of 11506231 is about 225.7586310235.

Adding to 11506231 its reverse (13260511), we get a palindrome (24766742).

It can be divided in two parts, 1150 and 6231, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 11506231 in words is "eleven million, five hundred six thousand, two hundred thirty-one".