23120232140 has 24 divisors (see below), whose sum is σ = 50118698112. Its totient is φ = 8949767040.

The previous prime is 23120232127. The next prime is 23120232167. The reversal of 23120232140 is 4123202132.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18644729 + ... + 18645968.

It is an arithmetic number, because the mean of its divisors is an integer number (2088279088).

Almost surely, 2^23120232140 is an apocalyptic number.

23120232140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23120232140 is an abundant number, since it is smaller than the sum of its proper divisors (26998465972).

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

23120232140 is a wasteful number, since it uses less digits than its factorization.

23120232140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37290737 (or 37290735 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 23120232140 its reverse (4123202132), we get a palindrome (27243434272).

The spelling of 23120232140 in words is "twenty-three billion, one hundred twenty million, two hundred thirty-two thousand, one hundred forty".