20203132123 has 4 divisors (see below), whose sum is σ = 20304655600. Its totient is φ = 20101608648.

The previous prime is 20203132097. The next prime is 20203132153. The reversal of 20203132123 is 32123130202.

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 20203132123 - 2¹³ = 20203123931 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20203132123.

It is not an unprimeable number, because it can be changed into a prime (20203132153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50761440 + ... + 50761837.

It is an arithmetic number, because the mean of its divisors is an integer number (5076163900).

Almost surely, 2^20203132123 is an apocalyptic number.

20203132123 is a deficient number, since it is larger than the sum of its proper divisors (101523477).

20203132123 is a wasteful number, since it uses less digits than its factorization.

20203132123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101523476.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20203132123 its reverse (32123130202), we get a palindrome (52326262325).

The spelling of 20203132123 in words is "twenty billion, two hundred three million, one hundred thirty-two thousand, one hundred twenty-three".