1013603503 has 4 divisors (see below), whose sum is σ = 1105749288. Its totient is φ = 921457720.

The previous prime is 1013603483. The next prime is 1013603509. The reversal of 1013603503 is 3053063101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3053063101 = 11 ⋅277551191.

It is a cyclic number.

It is not a de Polignac number, because 1013603503 - 2⁹ = 1013602991 is a prime.

It is a super-2 number, since 2×1013603503² = 2054784122587742018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013603509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46072876 + ... + 46072897.

It is an arithmetic number, because the mean of its divisors is an integer number (276437322).

Almost surely, 2^1013603503 is an apocalyptic number.

1013603503 is a deficient number, since it is larger than the sum of its proper divisors (92145785).

1013603503 is an equidigital number, since it uses as much as digits as its factorization.

1013603503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92145784.

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 1013603503 is about 31837.1403081370. The cubic root of 1013603503 is about 1004.5140933004.

Adding to 1013603503 its reverse (3053063101), we get a palindrome (4066666604).

The spelling of 1013603503 in words is "one billion, thirteen million, six hundred three thousand, five hundred three".