11531201 has 4 divisors (see below), whose sum is σ = 12579504. Its totient is φ = 10482900.

The previous prime is 11531197. The next prime is 11531203. The reversal of 11531201 is 10213511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11531201 - 2² = 11531197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11531203) 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, 524135 + ... + 524156.

It is an arithmetic number, because the mean of its divisors is an integer number (3144876).

Almost surely, 2^11531201 is an apocalyptic number.

11531201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11531201 is a deficient number, since it is larger than the sum of its proper divisors (1048303).

11531201 is a wasteful number, since it uses less digits than its factorization.

11531201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048302.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 11531201 is about 3395.7622119342. The cubic root of 11531201 is about 225.9218214466.

Adding to 11531201 its reverse (10213511), we get a palindrome (21744712).

The spelling of 11531201 in words is "eleven million, five hundred thirty-one thousand, two hundred one".