10531231 has 2 divisors, whose sum is σ = 10531232. Its totient is φ = 10531230.

The previous prime is 10531229. The next prime is 10531237. The reversal of 10531231 is 13213501.

10531231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10531231 - 2¹ = 10531229 is a prime.

It is a super-2 number, since 2×10531231² = 221813652750722, which contains 22 as substring.

Together with 10531229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10531237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5265615 + 5265616.

It is an arithmetic number, because the mean of its divisors is an integer number (5265616).

Almost surely, 2^10531231 is an apocalyptic number.

10531231 is a deficient number, since it is larger than the sum of its proper divisors (1).

10531231 is an equidigital number, since it uses as much as digits as its factorization.

10531231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 10531231 is about 3245.1858190249. The cubic root of 10531231 is about 219.1928480693.

Adding to 10531231 its reverse (13213501), we get a palindrome (23744732).

The spelling of 10531231 in words is "ten million, five hundred thirty-one thousand, two hundred thirty-one".