231323144005 has 32 divisors (see below), whose sum is σ = 302891599584. Its totient is φ = 168886296576.

The previous prime is 231323143963. The next prime is 231323144027. The reversal of 231323144005 is 500441323132.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 2546514369 + 228776629636 = 50463^2 + 478306^2 .

It is a cyclic number.

It is not a de Polignac number, because 231323144005 - 2¹¹ = 231323141957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 795969 + ... + 1047001.

It is an arithmetic number, because the mean of its divisors is an integer number (9465362487).

Almost surely, 2^231323144005 is an apocalyptic number.

It is an amenable number.

231323144005 is a deficient number, since it is larger than the sum of its proper divisors (71568455579).

231323144005 is a wasteful number, since it uses less digits than its factorization.

231323144005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251385.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 231323144005 its reverse (500441323132), we get a palindrome (731764467137).

The spelling of 231323144005 in words is "two hundred thirty-one billion, three hundred twenty-three million, one hundred forty-four thousand, five".