20102030123 has 16 divisors (see below), whose sum is σ = 23457507840. Its totient is φ = 16871253696.

The previous prime is 20102030119. The next prime is 20102030131. The reversal of 20102030123 is 32103020102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20102030123 - 2² = 20102030119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20102030098 and 20102030107.

It is not an unprimeable number, because it can be changed into a prime (20102030423) 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 15 ways as a sum of consecutive naturals, for example, 92465 + ... + 220802.

It is an arithmetic number, because the mean of its divisors is an integer number (1466094240).

Almost surely, 2^20102030123 is an apocalyptic number.

20102030123 is a deficient number, since it is larger than the sum of its proper divisors (3355477717).

20102030123 is a wasteful number, since it uses less digits than its factorization.

20102030123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313466.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20102030123 its reverse (32103020102), we get a palindrome (52205050225).

The spelling of 20102030123 in words is "twenty billion, one hundred two million, thirty thousand, one hundred twenty-three".