1013500403 has 4 divisors (see below), whose sum is σ = 1017107448. Its totient is φ = 1009893360.

The previous prime is 1013500399. The next prime is 1013500409. The reversal of 1013500403 is 3040053101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3040053101 = 17 ⋅178826653.

It is a cyclic number.

It is not a de Polignac number, because 1013500403 - 2² = 1013500399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1013500409) 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, 1803101 + ... + 1803662.

It is an arithmetic number, because the mean of its divisors is an integer number (254276862).

Almost surely, 2^1013500403 is an apocalyptic number.

1013500403 is a deficient number, since it is larger than the sum of its proper divisors (3607045).

1013500403 is an equidigital number, since it uses as much as digits as its factorization.

1013500403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3607044.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 1013500403 is about 31835.5210888718. The cubic root of 1013500403 is about 1004.4800336593.

Adding to 1013500403 its reverse (3040053101), we get a palindrome (4053553504).

The spelling of 1013500403 in words is "one billion, thirteen million, five hundred thousand, four hundred three".