23031220011 has 8 divisors (see below), whose sum is σ = 31698883584. Its totient is φ = 14858851560.

The previous prime is 23031219983. The next prime is 23031220019. The reversal of 23031220011 is 11002213032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23031220011 - 2³⁰ = 21957478187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23031220019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123823671 + ... + 123823856.

It is an arithmetic number, because the mean of its divisors is an integer number (3962360448).

Almost surely, 2^23031220011 is an apocalyptic number.

23031220011 is a deficient number, since it is larger than the sum of its proper divisors (8667663573).

23031220011 is a wasteful number, since it uses less digits than its factorization.

23031220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247647561.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 23031220011 its reverse (11002213032), we get a palindrome (34033433043).

The spelling of 23031220011 in words is "twenty-three billion, thirty-one million, two hundred twenty thousand, eleven".