23015305140 has 48 divisors (see below), whose sum is σ = 64582721280. Its totient is φ = 6124094080.

The previous prime is 23015305129. The next prime is 23015305141. The reversal of 23015305140 is 4150351032.

It is a self number, because there is not a number n which added to its sum of digits gives 23015305140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23015305141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388380 + ... + 443699.

It is an arithmetic number, because the mean of its divisors is an integer number (1345473360).

Almost surely, 2^23015305140 is an apocalyptic number.

23015305140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23015305140 is an abundant number, since it is smaller than the sum of its proper divisors (41567416140).

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

23015305140 is a wasteful number, since it uses less digits than its factorization.

23015305140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832552 (or 832550 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 23015305140 its reverse (4150351032), we get a palindrome (27165656172).

The spelling of 23015305140 in words is "twenty-three billion, fifteen million, three hundred five thousand, one hundred forty".