11231001231 has 16 divisors (see below), whose sum is σ = 15302396928. Its totient is φ = 7323660000.

The previous prime is 11231001217. The next prime is 11231001263. The reversal of 11231001231 is 13210013211.

It is a happy number.

It is not a de Polignac number, because 11231001231 - 2⁶ = 11231001167 is a prime.

It is a super-2 number, since 2×11231001231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11231001231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231001211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222606 + ... + 268356.

It is an arithmetic number, because the mean of its divisors is an integer number (956399808).

Almost surely, 2^11231001231 is an apocalyptic number.

11231001231 is a deficient number, since it is larger than the sum of its proper divisors (4071395697).

11231001231 is a wasteful number, since it uses less digits than its factorization.

11231001231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47542.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11231001231 its reverse (13210013211), we get a palindrome (24441014442).

The spelling of 11231001231 in words is "eleven billion, two hundred thirty-one million, one thousand, two hundred thirty-one".