11257231 has 4 divisors (see below), whose sum is σ = 11314000. Its totient is φ = 11200464.

The previous prime is 11257229. The next prime is 11257241. The reversal of 11257231 is 13275211.

It is a happy number.

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 11257231 - 2¹ = 11257229 is a prime.

It is a super-2 number, since 2×11257231² = 253450499574722, 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 (11257241) 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, 28086 + ... + 28483.

It is an arithmetic number, because the mean of its divisors is an integer number (2828500).

Almost surely, 2^11257231 is an apocalyptic number.

11257231 is a deficient number, since it is larger than the sum of its proper divisors (56769).

11257231 is an equidigital number, since it uses as much as digits as its factorization.

11257231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56768.

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

The square root of 11257231 is about 3355.1797269297. The cubic root of 11257231 is about 224.1182345091.

The spelling of 11257231 in words is "eleven million, two hundred fifty-seven thousand, two hundred thirty-one".