1021320230 has 64 divisors (see below), whose sum is σ = 2157926400. Its totient is φ = 347874912.

The previous prime is 1021320217. The next prime is 1021320239. The reversal of 1021320230 is 320231201.

It is a happy number.

It is a super-3 number, since 3×1021320230³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021320239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 571919 + ... + 573701.

It is an arithmetic number, because the mean of its divisors is an integer number (33717600).

Almost surely, 2^1021320230 is an apocalyptic number.

1021320230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021320230 is an abundant number, since it is smaller than the sum of its proper divisors (1136606170).

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

1021320230 is a wasteful number, since it uses less digits than its factorization.

1021320230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978 (or 1964 counting only the distinct ones).

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

The square root of 1021320230 is about 31958.1011638677. The cubic root of 1021320230 is about 1007.0568273801.

Adding to 1021320230 its reverse (320231201), we get a palindrome (1341551431).

The spelling of 1021320230 in words is "one billion, twenty-one million, three hundred twenty thousand, two hundred thirty".