230321720 has 32 divisors (see below), whose sum is σ = 518890320. Its totient is φ = 92010240.

The previous prime is 230321719. The next prime is 230321731. The reversal of 230321720 is 27123032.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 230321692 and 230321701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32060 + ... + 38580.

Almost surely, 2^230321720 is an apocalyptic number.

230321720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230321720 is an abundant number, since it is smaller than the sum of its proper divisors (288568600).

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

230321720 is a wasteful number, since it uses less digits than its factorization.

230321720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7415 (or 7411 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 230321720 is about 15176.3539758402. The cubic root of 230321720 is about 612.9781089967.

Adding to 230321720 its reverse (27123032), we get a palindrome (257444752).

The spelling of 230321720 in words is "two hundred thirty million, three hundred twenty-one thousand, seven hundred twenty".