20123143403 has 8 divisors (see below), whose sum is σ = 22366719216. Its totient is φ = 17948600800.

The previous prime is 20123143373. The next prime is 20123143441. The reversal of 20123143403 is 30434132102.

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

It is a cyclic number.

It is not a de Polignac number, because 20123143403 - 2⁸ = 20123143147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123143493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17257688 + ... + 17258853.

It is an arithmetic number, because the mean of its divisors is an integer number (2795839902).

Almost surely, 2^20123143403 is an apocalyptic number.

20123143403 is a deficient number, since it is larger than the sum of its proper divisors (2243575813).

20123143403 is a wasteful number, since it uses less digits than its factorization.

20123143403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34516605.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20123143403 its reverse (30434132102), we get a palindrome (50557275505).

The spelling of 20123143403 in words is "twenty billion, one hundred twenty-three million, one hundred forty-three thousand, four hundred three".