11231320322231 has 4 divisors (see below), whose sum is σ = 11231339316000. Its totient is φ = 11231301328464.

The previous prime is 11231320322221. The next prime is 11231320322251. The reversal of 11231320322231 is 13222302313211.

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 11231320322231 - 2¹⁸ = 11231320060087 is a prime.

It is a super-2 number, since 2×11231320322231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11231320322231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231320322221) 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, 8580431 + ... + 9802368.

It is an arithmetic number, because the mean of its divisors is an integer number (2807834829000).

Almost surely, 2^{11231320322231} is an apocalyptic number.

11231320322231 is a deficient number, since it is larger than the sum of its proper divisors (18993769).

11231320322231 is an equidigital number, since it uses as much as digits as its factorization.

11231320322231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18993768.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 11231320322231 its reverse (13222302313211), we get a palindrome (24453622635442).

The spelling of 11231320322231 in words is "eleven trillion, two hundred thirty-one billion, three hundred twenty million, three hundred twenty-two thousand, two hundred thirty-one".