103203406 has 4 divisors (see below), whose sum is σ = 154805112. Its totient is φ = 51601702.

The previous prime is 103203403. The next prime is 103203407. The reversal of 103203406 is 604302301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 604302301 = 13523 ⋅44687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103203403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25800850 + ... + 25800853.

It is an arithmetic number, because the mean of its divisors is an integer number (38701278).

Almost surely, 2^103203406 is an apocalyptic number.

103203406 is a deficient number, since it is larger than the sum of its proper divisors (51601706).

103203406 is an equidigital number, since it uses as much as digits as its factorization.

103203406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51601705.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 103203406 is about 10158.9077168759. The cubic root of 103203406 is about 469.0631799628.

Adding to 103203406 its reverse (604302301), we get a palindrome (707505707).

It can be divided in two parts, 10320 and 3406, that multiplied together give a triangular number (35149920 = T₈₃₈₄).

The spelling of 103203406 in words is "one hundred three million, two hundred three thousand, four hundred six".