230777819 has 4 divisors (see below), whose sum is σ = 242924040. Its totient is φ = 218631600.

The previous prime is 230777809. The next prime is 230777821. The reversal of 230777819 is 918777032.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230777819 is a prime.

It is a super-2 number, since 2×230777819² = 106516803484793522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 230777819.

It is not an unprimeable number, because it can be changed into a prime (230777809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6073082 + ... + 6073119.

It is an arithmetic number, because the mean of its divisors is an integer number (60731010).

Almost surely, 2^230777819 is an apocalyptic number.

230777819 is a deficient number, since it is larger than the sum of its proper divisors (12146221).

230777819 is a wasteful number, since it uses less digits than its factorization.

230777819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12146220.

The product of its (nonzero) digits is 148176, while the sum is 44.

The square root of 230777819 is about 15191.3731769054. The cubic root of 230777819 is about 613.3824627535.

The spelling of 230777819 in words is "two hundred thirty million, seven hundred seventy-seven thousand, eight hundred nineteen".