100023001320 has 512 divisors, whose sum is σ = 362847444480. Its totient is φ = 21776302080.

The previous prime is 100023001279. The next prime is 100023001333. The reversal of 100023001320 is 23100320001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 100023001296 and 100023001305.

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 127 ways as a sum of consecutive naturals, for example, 44003704 + ... + 44005976.

It is an arithmetic number, because the mean of its divisors is an integer number (708686415).

Almost surely, 2^100023001320 is an apocalyptic number.

100023001320 is a gapful number since it is divisible by the number (10) 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 100023001320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181423722240).

100023001320 is an abundant number, since it is smaller than the sum of its proper divisors (262824443160).

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

100023001320 is a wasteful number, since it uses less digits than its factorization.

100023001320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405 (or 2401 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 100023001320 its reverse (23100320001), we get a palindrome (123123321321).

The spelling of 100023001320 in words is "one hundred billion, twenty-three million, one thousand, three hundred twenty".