203031023313 has 8 divisors (see below), whose sum is σ = 270830366208. Its totient is φ = 135292847984.

The previous prime is 203031023309. The next prime is 203031023323. The reversal of 203031023313 is 313320130302.

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 203031023313 - 2² = 203031023309 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 203031023313.

It is not an unprimeable number, because it can be changed into a prime (203031023323) 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, 15284145 + ... + 15297422.

It is an arithmetic number, because the mean of its divisors is an integer number (33853795776).

Almost surely, 2^203031023313 is an apocalyptic number.

It is an amenable number.

203031023313 is a deficient number, since it is larger than the sum of its proper divisors (67799342895).

203031023313 is a wasteful number, since it uses less digits than its factorization.

203031023313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30583783.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 203031023313 its reverse (313320130302), we get a palindrome (516351153615).

The spelling of 203031023313 in words is "two hundred three billion, thirty-one million, twenty-three thousand, three hundred thirteen".