23000451320 has 128 divisors (see below), whose sum is σ = 64849973760. Its totient is φ = 7132392960.

The previous prime is 23000451317. The next prime is 23000451361. The reversal of 23000451320 is 2315400032.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 23000451292 and 23000451301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 587807 + ... + 625713.

It is an arithmetic number, because the mean of its divisors is an integer number (506640420).

Almost surely, 2^23000451320 is an apocalyptic number.

23000451320 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 23000451320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32424986880).

23000451320 is an abundant number, since it is smaller than the sum of its proper divisors (41849522440).

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

23000451320 is a wasteful number, since it uses less digits than its factorization.

23000451320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38133 (or 38129 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 23000451320 its reverse (2315400032), we get a palindrome (25315851352).

The spelling of 23000451320 in words is "twenty-three billion, four hundred fifty-one thousand, three hundred twenty".