11535231 has 16 divisors (see below), whose sum is σ = 16727904. Its totient is φ = 7041024.

The previous prime is 11535229. The next prime is 11535233. The reversal of 11535231 is 13253511.

11535231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11535229) and next prime (11535233).

It is not a de Polignac number, because 11535231 - 2¹ = 11535229 is a prime.

It is a super-2 number, since 2×11535231² = 266123108446722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11535198 and 11535207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11535233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1170 + ... + 4943.

It is an arithmetic number, because the mean of its divisors is an integer number (1045494).

Almost surely, 2^11535231 is an apocalyptic number.

11535231 is a deficient number, since it is larger than the sum of its proper divisors (5192673).

11535231 is a wasteful number, since it uses less digits than its factorization.

11535231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6170.

The product of its digits is 450, while the sum is 21.

The square root of 11535231 is about 3396.3555467589. The cubic root of 11535231 is about 225.9481372627.

Adding to 11535231 its reverse (13253511), we get a palindrome (24788742).

The spelling of 11535231 in words is "eleven million, five hundred thirty-five thousand, two hundred thirty-one".