1020230321 has 4 divisors (see below), whose sum is σ = 1112978544. Its totient is φ = 927482100.

The previous prime is 1020230287. The next prime is 1020230339. The reversal of 1020230321 is 1230320201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1020230321 - 2²⁶ = 953121457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020230296 and 1020230305.

It is not an unprimeable number, because it can be changed into a prime (1020230381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46374095 + ... + 46374116.

It is an arithmetic number, because the mean of its divisors is an integer number (278244636).

Almost surely, 2^1020230321 is an apocalyptic number.

1020230321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1020230321 is a deficient number, since it is larger than the sum of its proper divisors (92748223).

1020230321 is an equidigital number, since it uses as much as digits as its factorization.

1020230321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92748222.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1020230321 is about 31941.0444569366. The cubic root of 1020230321 is about 1006.6984706387.

Adding to 1020230321 its reverse (1230320201), we get a palindrome (2250550522).

The spelling of 1020230321 in words is "one billion, twenty million, two hundred thirty thousand, three hundred twenty-one".