23131202211 has 24 divisors (see below), whose sum is σ = 37107261360. Its totient is φ = 14234583168.

The previous prime is 23131202209. The next prime is 23131202219. The reversal of 23131202211 is 11220213132.

It is not a de Polignac number, because 23131202211 - 2¹ = 23131202209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23131202219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2530086 + ... + 2539211.

It is an arithmetic number, because the mean of its divisors is an integer number (1546135890).

Almost surely, 2^23131202211 is an apocalyptic number.

23131202211 is a deficient number, since it is larger than the sum of its proper divisors (13976059149).

23131202211 is a wasteful number, since it uses less digits than its factorization.

23131202211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5069332 (or 5069313 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 23131202211 its reverse (11220213132), we get a palindrome (34351415343).

The spelling of 23131202211 in words is "twenty-three billion, one hundred thirty-one million, two hundred two thousand, two hundred eleven".