11725231 has 16 divisors (see below), whose sum is σ = 13833216. Its totient is φ = 9730656.

The previous prime is 11725213. The next prime is 11725267. The reversal of 11725231 is 13252711.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11725231 - 2⁹ = 11724719 is a prime.

It is a super-2 number, since 2×11725231² = 274962084006722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11765231) 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, 51540 + ... + 51766.

It is an arithmetic number, because the mean of its divisors is an integer number (864576).

Almost surely, 2^11725231 is an apocalyptic number.

11725231 is a deficient number, since it is larger than the sum of its proper divisors (2107985).

11725231 is a wasteful number, since it uses less digits than its factorization.

11725231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438.

The product of its digits is 420, while the sum is 22.

The square root of 11725231 is about 3424.2124642025. The cubic root of 11725231 is about 227.1819393065.

Adding to 11725231 its reverse (13252711), we get a palindrome (24977942).

The spelling of 11725231 in words is "eleven million, seven hundred twenty-five thousand, two hundred thirty-one".