203313511349 has 8 divisors (see below), whose sum is σ = 219804973080. Its totient is φ = 186943758336.

The previous prime is 203313511343. The next prime is 203313511361. The reversal of 203313511349 is 943115313302.

It can be written as a sum of positive squares in 4 ways, for example, as 10162051249 + 193151460100 = 100807^2 + 439490^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203313511349 - 2⁴ = 203313511333 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 (203313511343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30423704 + ... + 30430385.

It is an arithmetic number, because the mean of its divisors is an integer number (27475621635).

Almost surely, 2^203313511349 is an apocalyptic number.

It is an amenable number.

203313511349 is a deficient number, since it is larger than the sum of its proper divisors (16491461731).

203313511349 is a wasteful number, since it uses less digits than its factorization.

203313511349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60854359.

The product of its (nonzero) digits is 29160, while the sum is 35.

The spelling of 203313511349 in words is "two hundred three billion, three hundred thirteen million, five hundred eleven thousand, three hundred forty-nine".