11431145 has 16 divisors (see below), whose sum is σ = 15035328. Its totient is φ = 8274240.

The previous prime is 11431139. The next prime is 11431151. The reversal of 11431145 is 54113411.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11431139) and next prime (11431151).

It is not a de Polignac number, because 11431145 - 2⁴ = 11431129 is a prime.

It is a super-2 number, since 2×11431145² = 261342152022050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16547 + ... + 17223.

It is an arithmetic number, because the mean of its divisors is an integer number (939708).

Almost surely, 2^11431145 is an apocalyptic number.

It is an amenable number.

11431145 is a deficient number, since it is larger than the sum of its proper divisors (3604183).

11431145 is a wasteful number, since it uses less digits than its factorization.

11431145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000.

The product of its digits is 240, while the sum is 20.

The square root of 11431145 is about 3380.9976338353. The cubic root of 11431145 is about 225.2664826160.

Adding to 11431145 its reverse (54113411), we get a palindrome (65544556).

The spelling of 11431145 in words is "eleven million, four hundred thirty-one thousand, one hundred forty-five".