203113100213 has 8 divisors (see below), whose sum is σ = 208645323960. Its totient is φ = 197583122880.

The previous prime is 203113100189. The next prime is 203113100231. The reversal of 203113100213 is 312001311302.

It can be written as a sum of positive squares in 4 ways, for example, as 120008894929 + 83104205284 = 346423^2 + 288278^2 .

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 203113100213 - 2¹⁴ = 203113083829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 203113100191 and 203113100200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203113100263) 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, 377498 + ... + 740763.

It is an arithmetic number, because the mean of its divisors is an integer number (26080665495).

Almost surely, 2^203113100213 is an apocalyptic number.

It is an amenable number.

203113100213 is a deficient number, since it is larger than the sum of its proper divisors (5532223747).

203113100213 is a wasteful number, since it uses less digits than its factorization.

203113100213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123207.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 203113100213 its reverse (312001311302), we get a palindrome (515114411515).

The spelling of 203113100213 in words is "two hundred three billion, one hundred thirteen million, one hundred thousand, two hundred thirteen".