203130497 has 4 divisors (see below), whose sum is σ = 203235120. Its totient is φ = 203025876.

The previous prime is 203130479. The next prime is 203130509. The reversal of 203130497 is 794031302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 794031302 = 2 ⋅397015651.

It is a cyclic number.

It is not a de Polignac number, because 203130497 - 2¹⁰ = 203129473 is a prime.

It is a super-2 number, since 2×203130497² = 82523997622934018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203135497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49343 + ... + 53300.

It is an arithmetic number, because the mean of its divisors is an integer number (50808780).

Almost surely, 2^203130497 is an apocalyptic number.

It is an amenable number.

203130497 is a deficient number, since it is larger than the sum of its proper divisors (104623).

203130497 is a wasteful number, since it uses less digits than its factorization.

203130497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104622.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 203130497 is about 14252.3856599518. The cubic root of 203130497 is about 587.8389745641.

Adding to 203130497 its reverse (794031302), we get a palindrome (997161799).

The spelling of 203130497 in words is "two hundred three million, one hundred thirty thousand, four hundred ninety-seven".