11320201231 has 4 divisors (see below), whose sum is σ = 11322392200. Its totient is φ = 11318010264.

The previous prime is 11320201187. The next prime is 11320201237. The reversal of 11320201231 is 13210202311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13210202311 = 2309 ⋅5721179.

It is a cyclic number.

It is not a de Polignac number, because 11320201231 - 2⁹ = 11320200719 is a prime.

It is a super-2 number, since 2×11320201231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11320201237) 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, 1087716 + ... + 1098073.

It is an arithmetic number, because the mean of its divisors is an integer number (2830598050).

Almost surely, 2^11320201231 is an apocalyptic number.

11320201231 is a deficient number, since it is larger than the sum of its proper divisors (2190969).

11320201231 is an equidigital number, since it uses as much as digits as its factorization.

11320201231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190968.

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

Adding to 11320201231 its reverse (13210202311), we get a palindrome (24530403542).

The spelling of 11320201231 in words is "eleven billion, three hundred twenty million, two hundred one thousand, two hundred thirty-one".