11312521 has 4 divisors (see below), whose sum is σ = 12340944. Its totient is φ = 10284100.

The previous prime is 11312519. The next prime is 11312537. The reversal of 11312521 is 12521311.

11312521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11312521 - 2¹ = 11312519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11312495 and 11312504.

It is not an unprimeable number, because it can be changed into a prime (11312221) 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, 514195 + ... + 514216.

It is an arithmetic number, because the mean of its divisors is an integer number (3085236).

Almost surely, 2^11312521 is an apocalyptic number.

11312521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11312521 is a deficient number, since it is larger than the sum of its proper divisors (1028423).

11312521 is a wasteful number, since it uses less digits than its factorization.

11312521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028422.

The product of its digits is 60, while the sum is 16.

The square root of 11312521 is about 3363.4091336024. The cubic root of 11312521 is about 224.4845550657.

Adding to 11312521 its reverse (12521311), we get a palindrome (23833832).

The spelling of 11312521 in words is "eleven million, three hundred twelve thousand, five hundred twenty-one".