231350505 has 32 divisors (see below), whose sum is σ = 381697920. Its totient is φ = 119600640.

The previous prime is 231350503. The next prime is 231350527. The reversal of 231350505 is 505053132.

It is not a de Polignac number, because 231350505 - 2¹ = 231350503 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231350503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62815 + ... + 66395.

It is an arithmetic number, because the mean of its divisors is an integer number (11928060).

Almost surely, 2^231350505 is an apocalyptic number.

It is an amenable number.

231350505 is a deficient number, since it is larger than the sum of its proper divisors (150347415).

231350505 is a wasteful number, since it uses less digits than its factorization.

231350505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 231350505 is about 15210.2105508109. The cubic root of 231350505 is about 613.8894227690.

The spelling of 231350505 in words is "two hundred thirty-one million, three hundred fifty thousand, five hundred five".