11231313123 has 8 divisors (see below), whose sum is σ = 15293703168. Its totient is φ = 7328232584.

The previous prime is 11231313097. The next prime is 11231313151. The reversal of 11231313123 is 32131313211.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11231313123 - 2¹⁸ = 11231050979 is a prime.

It is a super-2 number, since 2×11231313123² (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 11231313123.

It is not an unprimeable number, because it can be changed into a prime (11231313173) 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, 39827211 + ... + 39827492.

It is an arithmetic number, because the mean of its divisors is an integer number (1911712896).

Almost surely, 2^11231313123 is an apocalyptic number.

11231313123 is a deficient number, since it is larger than the sum of its proper divisors (4062390045).

11231313123 is an equidigital number, since it uses as much as digits as its factorization.

11231313123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79654753.

The product of its digits is 324, while the sum is 21.

Adding to 11231313123 its reverse (32131313211), we get a palindrome (43362626334).

The spelling of 11231313123 in words is "eleven billion, two hundred thirty-one million, three hundred thirteen thousand, one hundred twenty-three".