203313213131 has 16 divisors (see below), whose sum is σ = 233409673728. Its totient is φ = 173480227200.

The previous prime is 203313213121. The next prime is 203313213149. The reversal of 203313213131 is 131312313302.

It is not a de Polignac number, because 203313213131 - 2¹⁰ = 203313212107 is a prime.

It is a super-2 number, since 2×203313213131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203313213097 and 203313213106.

It is not an unprimeable number, because it can be changed into a prime (203313213121) 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, 4774946 + ... + 4817336.

It is an arithmetic number, because the mean of its divisors is an integer number (14588104608).

Almost surely, 2^203313213131 is an apocalyptic number.

203313213131 is a deficient number, since it is larger than the sum of its proper divisors (30096460597).

203313213131 is a wasteful number, since it uses less digits than its factorization.

203313213131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45482.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 203313213131 its reverse (131312313302), we get a palindrome (334625526433).

The spelling of 203313213131 in words is "two hundred three billion, three hundred thirteen million, two hundred thirteen thousand, one hundred thirty-one".