34021312 has 56 divisors (see below), whose sum is σ = 73594976. Its totient is φ = 15510528.

The previous prime is 34021307. The next prime is 34021313. The reversal of 34021312 is 21312043.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34021313) 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 7 ways as a sum of consecutive naturals, for example, 85498 + ... + 85894.

It is an arithmetic number, because the mean of its divisors is an integer number (1314196).

Almost surely, 2^34021312 is an apocalyptic number.

34021312 is a gapful number since it is divisible by the number (32) 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 34021312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36797488).

34021312 is an abundant number, since it is smaller than the sum of its proper divisors (39573664).

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

34021312 is a wasteful number, since it uses less digits than its factorization.

34021312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 34021312 is about 5832.7790974800. The cubic root of 34021312 is about 324.0288548198.

Adding to 34021312 its reverse (21312043), we get a palindrome (55333355).

The spelling of 34021312 in words is "thirty-four million, twenty-one thousand, three hundred twelve".