203111431353 has 6 divisors (see below), whose sum is σ = 293383178634. Its totient is φ = 135407620896.

The previous prime is 203111431307. The next prime is 203111431361. The reversal of 203111431353 is 353134111302.

203111431353 is a `hidden beast` number, since 20 + 311 + 14 + 313 + 5 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 105919004304 + 97192427049 = 325452^2 + 311757^2 .

It is not a de Polignac number, because 203111431353 - 2¹³ = 203111423161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203111431753) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11283968400 + ... + 11283968417.

It is an arithmetic number, because the mean of its divisors is an integer number (48897196439).

Almost surely, 2^203111431353 is an apocalyptic number.

It is an amenable number.

203111431353 is a deficient number, since it is larger than the sum of its proper divisors (90271747281).

203111431353 is a wasteful number, since it uses less digits than its factorization.

203111431353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22567936823 (or 22567936820 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

Adding to 203111431353 its reverse (353134111302), we get a palindrome (556245542655).

The spelling of 203111431353 in words is "two hundred three billion, one hundred eleven million, four hundred thirty-one thousand, three hundred fifty-three".