23011231320 has 192 divisors, whose sum is σ = 93240426240. Its totient is φ = 4781548800.

The previous prime is 23011231307. The next prime is 23011231363. The reversal of 23011231320 is 2313211032.

23011231320 is a `hidden beast` number, since 2 + 301 + 12 + 31 + 320 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 23011231293 and 23011231302.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 387346 + ... + 442785.

It is an arithmetic number, because the mean of its divisors is an integer number (485627220).

Almost surely, 2^23011231320 is an apocalyptic number.

23011231320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23011231320 is an abundant number, since it is smaller than the sum of its proper divisors (70229194920).

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

23011231320 is a wasteful number, since it uses less digits than its factorization.

23011231320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830166 (or 830159 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23011231320 its reverse (2313211032), we get a palindrome (25324442352).

The spelling of 23011231320 in words is "twenty-three billion, eleven million, two hundred thirty-one thousand, three hundred twenty".