203143203120403 has 16 divisors (see below), whose sum is σ = 250023742617600. Its totient is φ = 160727827540896.

The previous prime is 203143203120383. The next prime is 203143203120419. The reversal of 203143203120403 is 304021302341302.

It is a happy number.

It is not a de Polignac number, because 203143203120403 - 2⁵ = 203143203120371 is a prime.

It is a super-2 number, since 2×203143203120403² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (203143203120433) 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, 11386998 + ... + 23150596.

It is an arithmetic number, because the mean of its divisors is an integer number (15626483913600).

Almost surely, 2^{203143203120403} is an apocalyptic number.

203143203120403 is a deficient number, since it is larger than the sum of its proper divisors (46880539497197).

203143203120403 is a wasteful number, since it uses less digits than its factorization.

203143203120403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11953386.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 203143203120403 its reverse (304021302341302), we get a palindrome (507164505461705).

The spelling of 203143203120403 in words is "two hundred three trillion, one hundred forty-three billion, two hundred three million, one hundred twenty thousand, four hundred three".