230781523 has 6 divisors (see below), whose sum is σ = 268460196. Its totient is φ = 197812692.

The previous prime is 230781503. The next prime is 230781533. The reversal of 230781523 is 325187032.

230781523 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 230781523 - 2¹⁷ = 230650451 is a prime.

It is a super-2 number, since 2×230781523² = 106520222716399058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230781503) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2354865 + ... + 2354962.

It is an arithmetic number, because the mean of its divisors is an integer number (44743366).

Almost surely, 2^230781523 is an apocalyptic number.

230781523 is a deficient number, since it is larger than the sum of its proper divisors (37678673).

230781523 is an equidigital number, since it uses as much as digits as its factorization.

230781523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4709841 (or 4709834 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 230781523 is about 15191.4950877127. The cubic root of 230781523 is about 613.3857443463.

The spelling of 230781523 in words is "two hundred thirty million, seven hundred eighty-one thousand, five hundred twenty-three".