203421112023 has 16 divisors (see below), whose sum is σ = 286049252480. Its totient is φ = 128230820064.

The previous prime is 203421112021. The next prime is 203421112031. The reversal of 203421112023 is 320211124302.

It is not a de Polignac number, because 203421112023 - 2¹ = 203421112021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203421112021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3382036 + ... + 3441657.

It is an arithmetic number, because the mean of its divisors is an integer number (17878078280).

Almost surely, 2^203421112023 is an apocalyptic number.

203421112023 is a deficient number, since it is larger than the sum of its proper divisors (82628140457).

203421112023 is a wasteful number, since it uses less digits than its factorization.

203421112023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6824238.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 203421112023 its reverse (320211124302), we get a palindrome (523632236325).

The spelling of 203421112023 in words is "two hundred three billion, four hundred twenty-one million, one hundred twelve thousand, twenty-three".