231144424011 has 16 divisors (see below), whose sum is σ = 342443682720. Its totient is φ = 154092908160.

The previous prime is 231144423997. The next prime is 231144424081. The reversal of 231144424011 is 110424441132.

231144424011 is a `hidden beast` number, since 231 + 1 + 4 + 4 + 424 + 0 + 1 + 1 = 666.

It is not a de Polignac number, because 231144424011 - 2⁶ = 231144423947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (231144424081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2070871 + ... + 2179631.

It is an arithmetic number, because the mean of its divisors is an integer number (21402730170).

Almost surely, 2^231144424011 is an apocalyptic number.

231144424011 is a deficient number, since it is larger than the sum of its proper divisors (111299258709).

231144424011 is a wasteful number, since it uses less digits than its factorization.

231144424011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187483 (or 187477 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 231144424011 its reverse (110424441132), we get a palindrome (341568865143).

The spelling of 231144424011 in words is "two hundred thirty-one billion, one hundred forty-four million, four hundred twenty-four thousand, eleven".