23071312 has 60 divisors (see below), whose sum is σ = 52098228. Its totient is φ = 9856000.

The previous prime is 23071303. The next prime is 23071319. The reversal of 23071312 is 21317032.

It can be written as a sum of positive squares in 2 ways, for example, as 18974736 + 4096576 = 4356^2 + 2024^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23071312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23071319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32562 + ... + 33262.

Almost surely, 2^23071312 is an apocalyptic number.

23071312 is a gapful number since it is divisible by the number (22) 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 23071312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26049114).

23071312 is an abundant number, since it is smaller than the sum of its proper divisors (29026916).

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

23071312 is a wasteful number, since it uses less digits than its factorization.

23071312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748 (or 731 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 23071312 is about 4803.2605592451. The cubic root of 23071312 is about 284.6803104564.

Adding to 23071312 its reverse (21317032), we get a palindrome (44388344).

The spelling of 23071312 in words is "twenty-three million, seventy-one thousand, three hundred twelve".