203431453113 has 16 divisors (see below), whose sum is σ = 310029603840. Its totient is φ = 116231987856.

The previous prime is 203431453091. The next prime is 203431453223. The reversal of 203431453113 is 311354134302.

It is a happy number.

It is not a de Polignac number, because 203431453113 - 2⁸ = 203431452857 is a prime.

It is a super-2 number, since 2×203431453113² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (203431413113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 433695 + ... + 771332.

It is an arithmetic number, because the mean of its divisors is an integer number (19376850240).

Almost surely, 2^203431453113 is an apocalyptic number.

It is an amenable number.

203431453113 is a deficient number, since it is larger than the sum of its proper divisors (106598150727).

203431453113 is a wasteful number, since it uses less digits than its factorization.

203431453113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213076.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 203431453113 its reverse (311354134302), we get a palindrome (514785587415).

The spelling of 203431453113 in words is "two hundred three billion, four hundred thirty-one million, four hundred fifty-three thousand, one hundred thirteen".