23211240133 has 2 divisors, whose sum is σ = 23211240134. Its totient is φ = 23211240132.

The previous prime is 23211240097. The next prime is 23211240181. The reversal of 23211240133 is 33104211232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15079348804 + 8131891329 = 122798^2 + 90177^2 .

It is a cyclic number.

It is not a de Polignac number, because 23211240133 - 2²¹ = 23209142981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23211240433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11605620066 + 11605620067.

It is an arithmetic number, because the mean of its divisors is an integer number (11605620067).

Almost surely, 2^23211240133 is an apocalyptic number.

It is an amenable number.

23211240133 is a deficient number, since it is larger than the sum of its proper divisors (1).

23211240133 is an equidigital number, since it uses as much as digits as its factorization.

23211240133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 23211240133 its reverse (33104211232), we get a palindrome (56315451365).

The spelling of 23211240133 in words is "twenty-three billion, two hundred eleven million, two hundred forty thousand, one hundred thirty-three".