230821967 has 2 divisors, whose sum is σ = 230821968. Its totient is φ = 230821966.

The previous prime is 230821909. The next prime is 230821993. The reversal of 230821967 is 769128032.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230821967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 230821967.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230821067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115410983 + 115410984.

It is an arithmetic number, because the mean of its divisors is an integer number (115410984).

Almost surely, 2^230821967 is an apocalyptic number.

230821967 is a deficient number, since it is larger than the sum of its proper divisors (1).

230821967 is an equidigital number, since it uses as much as digits as its factorization.

230821967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 230821967 is about 15192.8261689522. The cubic root of 230821967 is about 613.4215737947.

Adding to 230821967 its reverse (769128032), we get a palindrome (999949999).

The spelling of 230821967 in words is "two hundred thirty million, eight hundred twenty-one thousand, nine hundred sixty-seven".