11311745 has 32 divisors (see below), whose sum is σ = 15482880. Its totient is φ = 7888320.

The previous prime is 11311739. The next prime is 11311747. The reversal of 11311745 is 54711311.

It is a happy number.

11311745 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-11311745 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 11311745.

It is not an unprimeable number, because it can be changed into a prime (11311747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67652 + ... + 67818.

It is an arithmetic number, because the mean of its divisors is an integer number (483840).

Almost surely, 2^11311745 is an apocalyptic number.

It is an amenable number.

11311745 is a deficient number, since it is larger than the sum of its proper divisors (4171135).

11311745 is a wasteful number, since it uses less digits than its factorization.

11311745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245.

The product of its digits is 420, while the sum is 23.

The square root of 11311745 is about 3363.2937724796. The cubic root of 11311745 is about 224.4794219924.

The spelling of 11311745 in words is "eleven million, three hundred eleven thousand, seven hundred forty-five".