23311154320 has 80 divisors (see below), whose sum is σ = 55989273600. Its totient is φ = 9016819200.

The previous prime is 23311154291. The next prime is 23311154407. The reversal of 23311154320 is 2345111332.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4314981 + ... + 4320379.

It is an arithmetic number, because the mean of its divisors is an integer number (699865920).

Almost surely, 2^23311154320 is an apocalyptic number.

23311154320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23311154320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27994636800).

23311154320 is an abundant number, since it is smaller than the sum of its proper divisors (32678119280).

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

23311154320 is a wasteful number, since it uses less digits than its factorization.

23311154320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7184 (or 7178 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 23311154320 its reverse (2345111332), we get a palindrome (25656265652).

The spelling of 23311154320 in words is "twenty-three billion, three hundred eleven million, one hundred fifty-four thousand, three hundred twenty".