1021230312 has 32 divisors (see below), whose sum is σ = 2553895680. Its totient is φ = 340300800.

The previous prime is 1021230299. The next prime is 1021230317. The reversal of 1021230312 is 2130321201.

It is a super-2 number, since 2×1021230312² = 2085822700295234688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021230291 and 1021230300.

It is not an unprimeable number, because it can be changed into a prime (1021230317) 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 7 ways as a sum of consecutive naturals, for example, 110793 + ... + 119655.

It is an arithmetic number, because the mean of its divisors is an integer number (79809240).

Almost surely, 2^1021230312 is an apocalyptic number.

1021230312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021230312 is an abundant number, since it is smaller than the sum of its proper divisors (1532665368).

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

1021230312 is a wasteful number, since it uses less digits than its factorization.

1021230312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13673 (or 13669 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1021230312 is about 31956.6943221604. The cubic root of 1021230312 is about 1007.0272724339.

Adding to 1021230312 its reverse (2130321201), we get a palindrome (3151551513).

The spelling of 1021230312 in words is "one billion, twenty-one million, two hundred thirty thousand, three hundred twelve".