20231100999 has 20 divisors (see below), whose sum is σ = 30240745920. Its totient is φ = 13478931360.

The previous prime is 20231100943. The next prime is 20231101013. The reversal of 20231100999 is 99900113202.

It is a happy number.

It is not a de Polignac number, because 20231100999 - 2¹⁶ = 20231035463 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20231100919) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 52714 + ... + 207944.

It is an arithmetic number, because the mean of its divisors is an integer number (1512037296).

Almost surely, 2^20231100999 is an apocalyptic number.

20231100999 is a deficient number, since it is larger than the sum of its proper divisors (10009644921).

20231100999 is a wasteful number, since it uses less digits than its factorization.

20231100999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156852 (or 156843 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The spelling of 20231100999 in words is "twenty billion, two hundred thirty-one million, one hundred thousand, nine hundred ninety-nine".