11311211023 has 8 divisors (see below), whose sum is σ = 12994079648. Its totient is φ = 9645087744.

The previous prime is 11311210951. The next prime is 11311211027. The reversal of 11311211023 is 32011211311.

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 11311211023 - 2¹³ = 11311202831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11311210988 and 11311211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311211027) 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, 4184886 + ... + 4187587.

It is an arithmetic number, because the mean of its divisors is an integer number (1624259956).

Almost surely, 2^11311211023 is an apocalyptic number.

11311211023 is a deficient number, since it is larger than the sum of its proper divisors (1682868625).

11311211023 is an equidigital number, since it uses as much as digits as its factorization.

11311211023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8372673.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11311211023 its reverse (32011211311), we get a palindrome (43322422334).

The spelling of 11311211023 in words is "eleven billion, three hundred eleven million, two hundred eleven thousand, twenty-three".