11031923011 has 4 divisors (see below), whose sum is σ = 11032198632. Its totient is φ = 11031647392.

The previous prime is 11031923003. The next prime is 11031923029. The reversal of 11031923011 is 11032913011.

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 11031923011 - 2³ = 11031923003 is a prime.

It is a super-2 number, since 2×11031923011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11031923081) 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, 64921 + ... + 162106.

It is an arithmetic number, because the mean of its divisors is an integer number (2758049658).

Almost surely, 2^11031923011 is an apocalyptic number.

11031923011 is a deficient number, since it is larger than the sum of its proper divisors (275621).

11031923011 is an equidigital number, since it uses as much as digits as its factorization.

11031923011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275620.

The product of its (nonzero) digits is 162, while the sum is 22.

The spelling of 11031923011 in words is "eleven billion, thirty-one million, nine hundred twenty-three thousand, eleven".