20123243102 has 8 divisors (see below), whose sum is σ = 31773541800. Its totient is φ = 9532062504.

The previous prime is 20123243069. The next prime is 20123243113. The reversal of 20123243102 is 20134232102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264779477 + ... + 264779552.

It is an arithmetic number, because the mean of its divisors is an integer number (3971692725).

Almost surely, 2^20123243102 is an apocalyptic number.

20123243102 is a deficient number, since it is larger than the sum of its proper divisors (11650298698).

20123243102 is a wasteful number, since it uses less digits than its factorization.

20123243102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529559050.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20123243102 its reverse (20134232102), we get a palindrome (40257475204).

The spelling of 20123243102 in words is "twenty billion, one hundred twenty-three million, two hundred forty-three thousand, one hundred two".