11201531 has 8 divisors (see below), whose sum is σ = 12310704. Its totient is φ = 10107520.

The previous prime is 11201501. The next prime is 11201537. The reversal of 11201531 is 13510211.

11201531 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11201531 - 2¹⁴ = 11185147 is a prime.

It is a super-2 number, since 2×11201531² = 250948593487922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11201537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2210 + ... + 5223.

It is an arithmetic number, because the mean of its divisors is an integer number (1538838).

Almost surely, 2^11201531 is an apocalyptic number.

11201531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11201531 is a deficient number, since it is larger than the sum of its proper divisors (1109173).

11201531 is a wasteful number, since it uses less digits than its factorization.

11201531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7581.

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

The square root of 11201531 is about 3346.8688351951. The cubic root of 11201531 is about 223.7479826707.

Adding to 11201531 its reverse (13510211), we get a palindrome (24711742).

The spelling of 11201531 in words is "eleven million, two hundred one thousand, five hundred thirty-one".