231500005 has 16 divisors (see below), whose sum is σ = 303507648. Its totient is φ = 168112000.

The previous prime is 231499969. The next prime is 231500023. The reversal of 231500005 is 500005132.

It is not a de Polignac number, because 231500005 - 2⁹ = 231499493 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, 39090 + ... + 44620.

It is an arithmetic number, because the mean of its divisors is an integer number (18969228).

Almost surely, 2^231500005 is an apocalyptic number.

It is an amenable number.

231500005 is a deficient number, since it is larger than the sum of its proper divisors (72007643).

231500005 is a wasteful number, since it uses less digits than its factorization.

231500005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6308.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 231500005 is about 15215.1242190131. The cubic root of 231500005 is about 614.0216272307.

Adding to 231500005 its reverse (500005132), we get a palindrome (731505137).

The spelling of 231500005 in words is "two hundred thirty-one million, five hundred thousand, five".