23013215140 has 24 divisors (see below), whose sum is σ = 48342946680. Its totient is φ = 9202391808.

The previous prime is 23013215101. The next prime is 23013215143. The reversal of 23013215140 is 4151231032.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 216442944 + 22796772196 = 14712^2 + 150986^2 .

It is not an unprimeable number, because it can be changed into a prime (23013215143) 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, 115107 + ... + 243466.

It is an arithmetic number, because the mean of its divisors is an integer number (2014289445).

Almost surely, 2^23013215140 is an apocalyptic number.

23013215140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23013215140 is an abundant number, since it is smaller than the sum of its proper divisors (25329731540).

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

23013215140 is a wasteful number, since it uses less digits than its factorization.

23013215140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361791 (or 361789 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 23013215140 its reverse (4151231032), we get a palindrome (27164446172).

The spelling of 23013215140 in words is "twenty-three billion, thirteen million, two hundred fifteen thousand, one hundred forty".