1021323312 has 60 divisors (see below), whose sum is σ = 2886627744. Its totient is φ = 337065600.

The previous prime is 1021323311. The next prime is 1021323313. The reversal of 1021323312 is 2133231201.

1021323312 is a `hidden beast` number, since 10 + 21 + 323 + 312 = 666.

It is an interprime number because it is at equal distance from previous prime (1021323311) and next prime (1021323313).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1021323311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20568 + ... + 49655.

Almost surely, 2^1021323312 is an apocalyptic number.

1021323312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021323312 is an abundant number, since it is smaller than the sum of its proper divisors (1865304432).

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

1021323312 is a wasteful number, since it uses less digits than its factorization.

1021323312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70338 (or 70329 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1021323312 is about 31958.1493832168. The cubic root of 1021323312 is about 1007.0578403651.

Adding to 1021323312 its reverse (2133231201), we get a palindrome (3154554513).

The spelling of 1021323312 in words is "one billion, twenty-one million, three hundred twenty-three thousand, three hundred twelve".