11431123 has 8 divisors (see below), whose sum is σ = 13204080. Its totient is φ = 9780480.

The previous prime is 11431111. The next prime is 11431129. The reversal of 11431123 is 32113411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11431123 is a prime.

It is a super-2 number, since 2×11431123² = 261341146082258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11431097 and 11431106.

It is not an unprimeable number, because it can be changed into a prime (11431129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30378 + ... + 30751.

It is an arithmetic number, because the mean of its divisors is an integer number (1650510).

Almost surely, 2^11431123 is an apocalyptic number.

11431123 is a deficient number, since it is larger than the sum of its proper divisors (1772957).

11431123 is a wasteful number, since it uses less digits than its factorization.

11431123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61157.

The product of its digits is 72, while the sum is 16.

The square root of 11431123 is about 3380.9943803562. The cubic root of 11431123 is about 225.2663381025.

Adding to 11431123 its reverse (32113411), we get a palindrome (43544534).

It can be divided in two parts, 11 and 431123, that added together give a palindrome (431134).

The spelling of 11431123 in words is "eleven million, four hundred thirty-one thousand, one hundred twenty-three".