11713231 has 4 divisors (see below), whose sum is σ = 11758032. Its totient is φ = 11668432.

The previous prime is 11713217. The next prime is 11713237. The reversal of 11713231 is 13231711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11713231 - 2²³ = 3324623 is a prime.

It is a super-2 number, since 2×11713231² = 274399560918722, 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 = 11713199 and 11713208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11713237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22006 + ... + 22531.

It is an arithmetic number, because the mean of its divisors is an integer number (2939508).

Almost surely, 2^11713231 is an apocalyptic number.

11713231 is a deficient number, since it is larger than the sum of its proper divisors (44801).

11713231 is an equidigital number, since it uses as much as digits as its factorization.

11713231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44800.

The product of its digits is 126, while the sum is 19.

The square root of 11713231 is about 3422.4597879303. The cubic root of 11713231 is about 227.1044109456.

Adding to 11713231 its reverse (13231711), we get a palindrome (24944942).

The spelling of 11713231 in words is "eleven million, seven hundred thirteen thousand, two hundred thirty-one".