231660005 has 16 divisors (see below), whose sum is σ = 283200624. Its totient is φ = 181870080.

The previous prime is 231659999. The next prime is 231660047. The reversal of 231660005 is 500066132.

It can be written as a sum of positive squares in 8 ways, for example, as 38950081 + 192709924 = 6241^2 + 13882^2 .

It is not a de Polignac number, because 231660005 - 2⁶ = 231659941 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 15 ways as a sum of consecutive naturals, for example, 242609 + ... + 243561.

It is an arithmetic number, because the mean of its divisors is an integer number (17700039).

Almost surely, 2^231660005 is an apocalyptic number.

It is an amenable number.

231660005 is a deficient number, since it is larger than the sum of its proper divisors (51540619).

231660005 is an equidigital number, since it uses as much as digits as its factorization.

231660005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 231660005 is about 15220.3812370124. The cubic root of 231660005 is about 614.1630539167.

The spelling of 231660005 in words is "two hundred thirty-one million, six hundred sixty thousand, five".