23213333081 has 4 divisors (see below), whose sum is σ = 23443168164. Its totient is φ = 22983498000.

The previous prime is 23213333071. The next prime is 23213333083. The reversal of 23213333081 is 18033331232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22783185481 + 430147600 = 150941^2 + 20740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23213333081 is a prime.

It is a super-2 number, since 2×23213333081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23213333083) 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, 114917390 + ... + 114917591.

It is an arithmetic number, because the mean of its divisors is an integer number (5860792041).

Almost surely, 2^23213333081 is an apocalyptic number.

It is an amenable number.

23213333081 is a deficient number, since it is larger than the sum of its proper divisors (229835083).

23213333081 is a wasteful number, since it uses less digits than its factorization.

23213333081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229835082.

The product of its (nonzero) digits is 7776, while the sum is 29.

The spelling of 23213333081 in words is "twenty-three billion, two hundred thirteen million, three hundred thirty-three thousand, eighty-one".