20123103231230 has 16 divisors (see below), whose sum is σ = 36221834571120. Its totient is φ = 8049186013632.

The previous prime is 20123103231131. The next prime is 20123103231241. The reversal of 20123103231230 is 3213230132102.

It is a junction number, because it is equal to n+sod(n) for n = 20123103231196 and 20123103231205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5364479 + ... + 8308058.

It is an arithmetic number, because the mean of its divisors is an integer number (2263864660695).

Almost surely, 2^{20123103231230} is an apocalyptic number.

20123103231230 is a deficient number, since it is larger than the sum of its proper divisors (16098731339890).

20123103231230 is a wasteful number, since it uses less digits than its factorization.

20123103231230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13819723.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 20123103231230 its reverse (3213230132102), we get a palindrome (23336333363332).

The spelling of 20123103231230 in words is "twenty trillion, one hundred twenty-three billion, one hundred three million, two hundred thirty-one thousand, two hundred thirty".