1361203 has 4 divisors (see below), whose sum is σ = 1365280. Its totient is φ = 1357128.

The previous prime is 1361197. The next prime is 1361273. The reversal of 1361203 is 3021631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3021631 = 17 ⋅177743.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1361203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1361273) 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, 1488 + ... + 2221.

It is an arithmetic number, because the mean of its divisors is an integer number (341320).

2^1361203 is an apocalyptic number.

1361203 is a deficient number, since it is larger than the sum of its proper divisors (4077).

1361203 is an equidigital number, since it uses as much as digits as its factorization.

1361203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4076.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1361203 is about 1166.7060469544. The cubic root of 1361203 is about 110.8258231983.

Adding to 1361203 its reverse (3021631), we get a palindrome (4382834).

It can be divided in two parts, 13 and 61203, that added together give a palindrome (61216).

The spelling of 1361203 in words is "one million, three hundred sixty-one thousand, two hundred three".