103445013 has 16 divisors (see below), whose sum is σ = 157862016. Its totient is φ = 59024640.

The previous prime is 103445011. The next prime is 103445039. The reversal of 103445013 is 310544301.

It is not a de Polignac number, because 103445013 - 2¹ = 103445011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103445011) 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, 12745 + ... + 19217.

It is an arithmetic number, because the mean of its divisors is an integer number (9866376).

Almost surely, 2^103445013 is an apocalyptic number.

It is an amenable number.

103445013 is a deficient number, since it is larger than the sum of its proper divisors (54417003).

103445013 is an equidigital number, since it uses as much as digits as its factorization.

103445013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7244.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 103445013 is about 10170.7921520401. The cubic root of 103445013 is about 469.4289321853.

Adding to 103445013 its reverse (310544301), we get a palindrome (413989314).

The spelling of 103445013 in words is "one hundred three million, four hundred forty-five thousand, thirteen".