203031413 has 8 divisors (see below), whose sum is σ = 218993208. Its totient is φ = 187118784.

The previous prime is 203031403. The next prime is 203031421. The reversal of 203031413 is 314130302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2582449 + 200448964 = 1607^2 + 14158^2 .

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 203031413 - 2¹⁶ = 202965877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203031391 and 203031400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203031403) 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, 3470 + ... + 20447.

It is an arithmetic number, because the mean of its divisors is an integer number (27374151).

Almost surely, 2^203031413 is an apocalyptic number.

It is an amenable number.

203031413 is a deficient number, since it is larger than the sum of its proper divisors (15961795).

203031413 is a wasteful number, since it uses less digits than its factorization.

203031413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24583.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 203031413 is about 14248.9091863202. The cubic root of 203031413 is about 587.7433793502.

Adding to 203031413 its reverse (314130302), we get a palindrome (517161715).

The spelling of 203031413 in words is "two hundred three million, thirty-one thousand, four hundred thirteen".