20306250123 has 4 divisors (see below), whose sum is σ = 27075000168. Its totient is φ = 13537500080.

The previous prime is 20306250121. The next prime is 20306250179. The reversal of 20306250123 is 32105260302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20306250123 - 2¹ = 20306250121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20306250093 and 20306250102.

It is not an unprimeable number, because it can be changed into a prime (20306250121) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3384375018 + ... + 3384375023.

It is an arithmetic number, because the mean of its divisors is an integer number (6768750042).

Almost surely, 2^20306250123 is an apocalyptic number.

20306250123 is a deficient number, since it is larger than the sum of its proper divisors (6768750045).

20306250123 is an equidigital number, since it uses as much as digits as its factorization.

20306250123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6768750044.

The product of its (nonzero) digits is 2160, while the sum is 24.

The spelling of 20306250123 in words is "twenty billion, three hundred six million, two hundred fifty thousand, one hundred twenty-three".