230540819 has 2 divisors, whose sum is σ = 230540820. Its totient is φ = 230540818.

The previous prime is 230540797. The next prime is 230540837. The reversal of 230540819 is 918045032.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 230540819 - 2¹⁶ = 230475283 is a prime.

It is a super-2 number, since 2×230540819² = 106298138450381522, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (230540119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115270409 + 115270410.

It is an arithmetic number, because the mean of its divisors is an integer number (115270410).

Almost surely, 2^230540819 is an apocalyptic number.

230540819 is a deficient number, since it is larger than the sum of its proper divisors (1).

230540819 is an equidigital number, since it uses as much as digits as its factorization.

230540819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 230540819 is about 15183.5706933514. The cubic root of 230540819 is about 613.1724173854.

The spelling of 230540819 in words is "two hundred thirty million, five hundred forty thousand, eight hundred nineteen".