231000005 has 8 divisors (see below), whose sum is σ = 291789600. Its totient is φ = 175073616.

The previous prime is 230999969. The next prime is 231000013. The reversal of 231000005 is 500000132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231000005 - 2¹⁸ = 230737861 is a prime.

It is a super-2 number, since 2×231000005² = 106722004620000050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231000005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1215695 + ... + 1215884.

It is an arithmetic number, because the mean of its divisors is an integer number (36473700).

Almost surely, 2^231000005 is an apocalyptic number.

It is an amenable number.

231000005 is a deficient number, since it is larger than the sum of its proper divisors (60789595).

231000005 is a wasteful number, since it uses less digits than its factorization.

231000005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2431603.

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 231000005 is about 15198.6843180586. The cubic root of 231000005 is about 613.5792483932.

Adding to 231000005 its reverse (500000132), we get a palindrome (731000137).

The spelling of 231000005 in words is "two hundred thirty-one million, five", and thus it is an aban number.