11320531 has 8 divisors (see below), whose sum is σ = 11856384. Its totient is φ = 10788360.

The previous prime is 11320511. The next prime is 11320537. The reversal of 11320531 is 13502311.

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 11320531 - 2⁷ = 11320403 is a prime.

It is a super-2 number, since 2×11320531² = 256308844243922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11320537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6870 + ... + 8356.

It is an arithmetic number, because the mean of its divisors is an integer number (1482048).

Almost surely, 2^11320531 is an apocalyptic number.

11320531 is a deficient number, since it is larger than the sum of its proper divisors (535853).

11320531 is a wasteful number, since it uses less digits than its factorization.

11320531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 11320531 is about 3364.5996790109. The cubic root of 11320531 is about 224.5375257830.

Adding to 11320531 its reverse (13502311), we get a palindrome (24822842).

The spelling of 11320531 in words is "eleven million, three hundred twenty thousand, five hundred thirty-one".