11231232401 has 4 divisors (see below), whose sum is σ = 11232159204. Its totient is φ = 11230305600.

The previous prime is 11231232391. The next prime is 11231232403. The reversal of 11231232401 is 10423213211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10423213211 = 19 ⋅548590169.

It can be written as a sum of positive squares in 2 ways, for example, as 9036403600 + 2194828801 = 95060^2 + 46849^2 .

It is a cyclic number.

It is not a de Polignac number, because 11231232401 - 2¹⁰ = 11231231377 is a prime.

It is a super-2 number, since 2×11231232401² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11231232403) 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, 444980 + ... + 469541.

It is an arithmetic number, because the mean of its divisors is an integer number (2808039801).

Almost surely, 2^11231232401 is an apocalyptic number.

It is an amenable number.

11231232401 is a deficient number, since it is larger than the sum of its proper divisors (926803).

11231232401 is an equidigital number, since it uses as much as digits as its factorization.

11231232401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926802.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 11231232401 its reverse (10423213211), we get a palindrome (21654445612).

The spelling of 11231232401 in words is "eleven billion, two hundred thirty-one million, two hundred thirty-two thousand, four hundred one".