23012032140 has 72 divisors (see below), whose sum is σ = 69905738448. Its totient is φ = 6127524480.

The previous prime is 23012032139. The next prime is 23012032223. The reversal of 23012032140 is 4123021032.

23012032140 is a `hidden beast` number, since 2 + 301 + 2 + 0 + 321 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29350 + ... + 216530.

It is an arithmetic number, because the mean of its divisors is an integer number (970913034).

Almost surely, 2^23012032140 is an apocalyptic number.

23012032140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23012032140 is an abundant number, since it is smaller than the sum of its proper divisors (46893706308).

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

23012032140 is a wasteful number, since it uses less digits than its factorization.

23012032140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187879 (or 187874 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 23012032140 its reverse (4123021032), we get a palindrome (27135053172).

The spelling of 23012032140 in words is "twenty-three billion, twelve million, thirty-two thousand, one hundred forty".