230812840 has 16 divisors (see below), whose sum is σ = 519328980. Its totient is φ = 92325120.

The previous prime is 230812831. The next prime is 230812847. The reversal of 230812840 is 48218032.

230812840 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 229159044 + 1653796 = 15138^2 + 1286^2 .

It is a junction number, because it is equal to n+sod(n) for n = 230812799 and 230812808.

It is not an unprimeable number, because it can be changed into a prime (230812847) 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, 2885121 + ... + 2885200.

Almost surely, 2^230812840 is an apocalyptic number.

230812840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230812840 is an abundant number, since it is smaller than the sum of its proper divisors (288516140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

230812840 is a wasteful number, since it uses less digits than its factorization.

230812840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5770332 (or 5770328 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 230812840 is about 15192.5257939554. The cubic root of 230812840 is about 613.4134885265.

It can be divided in two parts, 23081 and 2840, that added together give a square (25921 = 161²).

The spelling of 230812840 in words is "two hundred thirty million, eight hundred twelve thousand, eight hundred forty".