231010505 has 16 divisors (see below), whose sum is σ = 315563904. Its totient is φ = 160702080.

The previous prime is 231010487. The next prime is 231010511. The reversal of 231010505 is 505010132.

231010505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231010505 - 2¹² = 231006409 is a prime.

It is a Duffinian 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, 90044 + ... + 92573.

It is an arithmetic number, because the mean of its divisors is an integer number (19722744).

Almost surely, 2^231010505 is an apocalyptic number.

It is an amenable number.

231010505 is a deficient number, since it is larger than the sum of its proper divisors (84553399).

231010505 is a wasteful number, since it uses less digits than its factorization.

231010505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182656.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 231010505 is about 15199.0297387695. The cubic root of 231010505 is about 613.5885449074.

Adding to 231010505 its reverse (505010132), we get a palindrome (736020637).

The spelling of 231010505 in words is "two hundred thirty-one million, ten thousand, five hundred five".