9723122136 has 288 divisors, whose sum is σ = 33331662000. Its totient is φ = 2537740800.

The previous prime is 9723122119. The next prime is 9723122147. The reversal of 9723122136 is 6312213279.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 9723122136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4631215 + ... + 4633313.

Almost surely, 2^9723122136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9723122136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16665831000).

9723122136 is an abundant number, since it is smaller than the sum of its proper divisors (23608539864).

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

9723122136 is a wasteful number, since it uses less digits than its factorization.

9723122136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239 (or 2225 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 9723122136 is about 98605.8930084810. The cubic root of 9723122136 is about 2134.3644583284.

The spelling of 9723122136 in words is "nine billion, seven hundred twenty-three million, one hundred twenty-two thousand, one hundred thirty-six".