11313131023 has 4 divisors (see below), whose sum is σ = 11334845808. Its totient is φ = 11291416240.

The previous prime is 11313131009. The next prime is 11313131129. The reversal of 11313131023 is 32013131311.

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 11313131023 - 2⁵ = 11313130991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11313135023) 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, 10856611 + ... + 10857652.

It is an arithmetic number, because the mean of its divisors is an integer number (2833711452).

Almost surely, 2^11313131023 is an apocalyptic number.

11313131023 is a deficient number, since it is larger than the sum of its proper divisors (21714785).

11313131023 is an equidigital number, since it uses as much as digits as its factorization.

11313131023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21714784.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 11313131023 its reverse (32013131311), we get a palindrome (43326262334).

The spelling of 11313131023 in words is "eleven billion, three hundred thirteen million, one hundred thirty-one thousand, twenty-three".