23142220134 has 64 divisors (see below), whose sum is σ = 53447040000. Its totient is φ = 6606519840.

The previous prime is 23142220051. The next prime is 23142220169. The reversal of 23142220134 is 43102224132.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172917 + ... + 276015.

It is an arithmetic number, because the mean of its divisors is an integer number (835110000).

Almost surely, 2^23142220134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23142220134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26723520000).

23142220134 is an abundant number, since it is smaller than the sum of its proper divisors (30304819866).

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

23142220134 is a wasteful number, since it uses less digits than its factorization.

23142220134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103313.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 23142220134 its reverse (43102224132), we get a palindrome (66244444266).

The spelling of 23142220134 in words is "twenty-three billion, one hundred forty-two million, two hundred twenty thousand, one hundred thirty-four".