203111333212013 has 4 divisors (see below), whose sum is σ = 203122352127708. Its totient is φ = 203100314296320.

The previous prime is 203111333211947. The next prime is 203111333212079. The reversal of 203111333212013 is 310212333111302.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (203111333211947) and next prime (203111333212079).

It can be written as a sum of positive squares in 2 ways, for example, as 69939802452004 + 133171530760009 = 8363002^2 + 11539997^2 .

It is a cyclic number.

It is not a de Polignac number, because 203111333212013 - 2³⁶ = 203042613735277 is a prime.

It is a super-2 number, since 2×203111333212013² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203111333212093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5509430198 + ... + 5509467063.

It is an arithmetic number, because the mean of its divisors is an integer number (50780588031927).

Almost surely, 2^{203111333212013} is an apocalyptic number.

It is an amenable number.

203111333212013 is a deficient number, since it is larger than the sum of its proper divisors (11018915695).

203111333212013 is a wasteful number, since it uses less digits than its factorization.

203111333212013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11018915694.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 203111333212013 its reverse (310212333111302), we get a palindrome (513323666323315).

The spelling of 203111333212013 in words is "two hundred three trillion, one hundred eleven billion, three hundred thirty-three million, two hundred twelve thousand, thirteen".