11440312251 has 4 divisors (see below), whose sum is σ = 15253749672. Its totient is φ = 7626874832.

The previous prime is 11440312229. The next prime is 11440312321. The reversal of 11440312251 is 15221304411.

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 11440312251 - 2⁶ = 11440312187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11440312151) 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, 1906718706 + ... + 1906718711.

It is an arithmetic number, because the mean of its divisors is an integer number (3813437418).

Almost surely, 2^11440312251 is an apocalyptic number.

11440312251 is a deficient number, since it is larger than the sum of its proper divisors (3813437421).

11440312251 is an equidigital number, since it uses as much as digits as its factorization.

11440312251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3813437420.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 11440312251 its reverse (15221304411), we get a palindrome (26661616662).

The spelling of 11440312251 in words is "eleven billion, four hundred forty million, three hundred twelve thousand, two hundred fifty-one".