20131238223 has 12 divisors (see below), whose sum is σ = 29230700928. Its totient is φ = 13350558240.

The previous prime is 20131238213. The next prime is 20131238243. The reversal of 20131238223 is 32283213102.

It is a happy number.

20131238223 is a `hidden beast` number, since 201 + 3 + 1 + 238 + 223 = 666.

It is not a de Polignac number, because 20131238223 - 2¹⁰ = 20131237199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131238213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5853790 + ... + 5857227.

It is an arithmetic number, because the mean of its divisors is an integer number (2435891744).

Almost surely, 2^20131238223 is an apocalyptic number.

20131238223 is a deficient number, since it is larger than the sum of its proper divisors (9099462705).

20131238223 is a wasteful number, since it uses less digits than its factorization.

20131238223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11711214 (or 11711211 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The spelling of 20131238223 in words is "twenty billion, one hundred thirty-one million, two hundred thirty-eight thousand, two hundred twenty-three".