101028312 has 96 divisors (see below), whose sum is σ = 341153280. Its totient is φ = 26239680.

The previous prime is 101028311. The next prime is 101028337. The reversal of 101028312 is 213820101.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101028311) 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 23 ways as a sum of consecutive naturals, for example, 3568 + ... + 14655.

It is an arithmetic number, because the mean of its divisors is an integer number (3553680).

Almost surely, 2^101028312 is an apocalyptic number.

101028312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101028312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170576640).

101028312 is an abundant number, since it is smaller than the sum of its proper divisors (240124968).

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

101028312 is a wasteful number, since it uses less digits than its factorization.

101028312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18253 (or 18246 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 101028312 is about 10051.2840970694. The cubic root of 101028312 is about 465.7444613201.

Adding to 101028312 its reverse (213820101), we get a palindrome (314848413).

The spelling of 101028312 in words is "one hundred one million, twenty-eight thousand, three hundred twelve".