11131651 has 4 divisors (see below), whose sum is σ = 11786472. Its totient is φ = 10476832.

The previous prime is 11131649. The next prime is 11131657. The reversal of 11131651 is 15613111.

11131651 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.

It is a cyclic number.

It is not a de Polignac number, because 11131651 - 2¹ = 11131649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11131657) 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, 327385 + ... + 327418.

It is an arithmetic number, because the mean of its divisors is an integer number (2946618).

Almost surely, 2^11131651 is an apocalyptic number.

11131651 is a deficient number, since it is larger than the sum of its proper divisors (654821).

11131651 is an equidigital number, since it uses as much as digits as its factorization.

11131651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654820.

The product of its digits is 90, while the sum is 19.

The square root of 11131651 is about 3336.4128941125. The cubic root of 11131651 is about 223.2817328376.

Adding to 11131651 its reverse (15613111), we get a palindrome (26744762).

The spelling of 11131651 in words is "eleven million, one hundred thirty-one thousand, six hundred fifty-one".