11122431 has 4 divisors (see below), whose sum is σ = 14829912. Its totient is φ = 7414952.

The previous prime is 11122427. The next prime is 11122451. The reversal of 11122431 is 13422111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13422111 = 3 ⋅4474037.

It is a cyclic number.

It is not a de Polignac number, because 11122431 - 2² = 11122427 is a prime.

It is a super-2 number, since 2×11122431² = 247416942699522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11122431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1853736 + ... + 1853741.

It is an arithmetic number, because the mean of its divisors is an integer number (3707478).

Almost surely, 2^11122431 is an apocalyptic number.

11122431 is a deficient number, since it is larger than the sum of its proper divisors (3707481).

11122431 is an equidigital number, since it uses as much as digits as its factorization.

11122431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3707480.

The product of its digits is 48, while the sum is 15.

The square root of 11122431 is about 3335.0308844147. The cubic root of 11122431 is about 223.2200700404.

Adding to 11122431 its reverse (13422111), we get a palindrome (24544542).

The spelling of 11122431 in words is "eleven million, one hundred twenty-two thousand, four hundred thirty-one".