231055445 has 4 divisors (see below), whose sum is σ = 277266540. Its totient is φ = 184844352.

The previous prime is 231055423. The next prime is 231055477. The reversal of 231055445 is 544550132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35307364 + 195748081 = 5942^2 + 13991^2 .

It is a cyclic number.

It is not a de Polignac number, because 231055445 - 2¹⁸ = 230793301 is a prime.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 23105540 + ... + 23105549.

It is an arithmetic number, because the mean of its divisors is an integer number (69316635).

Almost surely, 2^231055445 is an apocalyptic number.

It is an amenable number.

231055445 is a deficient number, since it is larger than the sum of its proper divisors (46211095).

231055445 is an equidigital number, since it uses as much as digits as its factorization.

231055445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46211094.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 231055445 is about 15200.5080507199. The cubic root of 231055445 is about 613.6283308056.

The spelling of 231055445 in words is "two hundred thirty-one million, fifty-five thousand, four hundred forty-five".