1030400203 has 4 divisors (see below), whose sum is σ = 1177600240. Its totient is φ = 883200168.

The previous prime is 1030400171. The next prime is 1030400213. The reversal of 1030400203 is 3020040301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3020040301 = 1451 ⋅2081351.

It is a cyclic number.

It is not a de Polignac number, because 1030400203 - 2⁵ = 1030400171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1030400213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73600008 + ... + 73600021.

It is an arithmetic number, because the mean of its divisors is an integer number (294400060).

Almost surely, 2^1030400203 is an apocalyptic number.

1030400203 is a deficient number, since it is larger than the sum of its proper divisors (147200037).

1030400203 is an equidigital number, since it uses as much as digits as its factorization.

1030400203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147200036.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 1030400203 is about 32099.8473983912. The cubic root of 1030400203 is about 1010.0324150627.

Adding to 1030400203 its reverse (3020040301), we get a palindrome (4050440504).

The spelling of 1030400203 in words is "one billion, thirty million, four hundred thousand, two hundred three".