1003103405501 has 16 divisors (see below), whose sum is σ = 1090028659200. Its totient is φ = 919595073600.

The previous prime is 1003103405471. The next prime is 1003103405527. The reversal of 1003103405501 is 1055043013001.

It is a cyclic number.

It is not a de Polignac number, because 1003103405501 - 2¹⁴ = 1003103389117 is a prime.

It is a super-2 number, since 2×1003103405501² (a number of 25 digits) 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 (1003103005501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11253215 + ... + 11342003.

It is an arithmetic number, because the mean of its divisors is an integer number (68126791200).

Almost surely, 2^{1003103405501} is an apocalyptic number.

It is an amenable number.

1003103405501 is a deficient number, since it is larger than the sum of its proper divisors (86925253699).

1003103405501 is a wasteful number, since it uses less digits than its factorization.

1003103405501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108020.

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 1003103405501 its reverse (1055043013001), we get a palindrome (2058146418502).

The spelling of 1003103405501 in words is "one trillion, three billion, one hundred three million, four hundred five thousand, five hundred one".