230819531 has 2 divisors, whose sum is σ = 230819532. Its totient is φ = 230819530.

The previous prime is 230819527. The next prime is 230819539. The reversal of 230819531 is 135918032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 230819531 - 2² = 230819527 is a prime.

It is a super-2 number, since 2×230819531² = 106555311782119922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (230819539) 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 as a sum of consecutive naturals, namely, 115409765 + 115409766.

It is an arithmetic number, because the mean of its divisors is an integer number (115409766).

Almost surely, 2^230819531 is an apocalyptic number.

230819531 is a deficient number, since it is larger than the sum of its proper divisors (1).

230819531 is an equidigital number, since it uses as much as digits as its factorization.

230819531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 230819531 is about 15192.7459993248. The cubic root of 230819531 is about 613.4194158542.

The spelling of 230819531 in words is "two hundred thirty million, eight hundred nineteen thousand, five hundred thirty-one".