20300023191 has 16 divisors (see below), whose sum is σ = 31090397184. Its totient is φ = 11541127584.

The previous prime is 20300023141. The next prime is 20300023193. The reversal of 20300023191 is 19132000302.

It is a happy number.

It is not a de Polignac number, because 20300023191 - 2⁷ = 20300023063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20300023193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2449335 + ... + 2457608.

It is an arithmetic number, because the mean of its divisors is an integer number (1943149824).

Almost surely, 2^20300023191 is an apocalyptic number.

20300023191 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20300023191 is a deficient number, since it is larger than the sum of its proper divisors (10790373993).

20300023191 is a wasteful number, since it uses less digits than its factorization.

20300023191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4907150.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 20300023191 its reverse (19132000302), we get a palindrome (39432023493).

The spelling of 20300023191 in words is "twenty billion, three hundred million, twenty-three thousand, one hundred ninety-one".