11130431 has 4 divisors (see below), whose sum is σ = 11986632. Its totient is φ = 10274232.

The previous prime is 11130419. The next prime is 11130433. The reversal of 11130431 is 13403111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13403111 = 2207 ⋅6073.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11130431 is a prime.

It is a super-2 number, since 2×11130431² = 247772988491522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11130433) 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, 428081 + ... + 428106.

It is an arithmetic number, because the mean of its divisors is an integer number (2996658).

Almost surely, 2^11130431 is an apocalyptic number.

11130431 is a deficient number, since it is larger than the sum of its proper divisors (856201).

11130431 is an equidigital number, since it uses as much as digits as its factorization.

11130431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856200.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 11130431 is about 3336.2300580146. The cubic root of 11130431 is about 223.2735755071.

Adding to 11130431 its reverse (13403111), we get a palindrome (24533542).

The spelling of 11130431 in words is "eleven million, one hundred thirty thousand, four hundred thirty-one".