103445391 has 16 divisors (see below), whose sum is σ = 166904064. Its totient is φ = 55634304.

The previous prime is 103445389. The next prime is 103445399. The reversal of 103445391 is 193544301.

It is not a de Polignac number, because 103445391 - 2¹ = 103445389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103445399) 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, 144525 + ... + 145238.

It is an arithmetic number, because the mean of its divisors is an integer number (10431504).

Almost surely, 2^103445391 is an apocalyptic number.

103445391 is a deficient number, since it is larger than the sum of its proper divisors (63458673).

103445391 is a wasteful number, since it uses less digits than its factorization.

103445391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289790.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 103445391 is about 10170.8107346465. The cubic root of 103445391 is about 469.4295039671.

Adding to 103445391 its reverse (193544301), we get a palindrome (296989692).

The spelling of 103445391 in words is "one hundred three million, four hundred forty-five thousand, three hundred ninety-one".