11301001231 has 4 divisors (see below), whose sum is σ = 12170309032. Its totient is φ = 10431693432.

The previous prime is 11301001211. The next prime is 11301001247. The reversal of 11301001231 is 13210010311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11301001231 - 2¹⁷ = 11300870159 is a prime.

It is a super-2 number, since 2×11301001231² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 869307787 = 11301001231 / (1 + 1 + 3 + 0 + 1 + 0 + 0 + 1 + 2 + 3 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11301001211) 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, 434653881 + ... + 434653906.

It is an arithmetic number, because the mean of its divisors is an integer number (3042577258).

Almost surely, 2^11301001231 is an apocalyptic number.

11301001231 is a deficient number, since it is larger than the sum of its proper divisors (869307801).

11301001231 is an equidigital number, since it uses as much as digits as its factorization.

11301001231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869307800.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 11301001231 its reverse (13210010311), we get a palindrome (24511011542).

The spelling of 11301001231 in words is "eleven billion, three hundred one million, one thousand, two hundred thirty-one".