1303215 has 16 divisors (see below), whose sum is σ = 2099328. Its totient is φ = 690336.

The previous prime is 1303213. The next prime is 1303219. The reversal of 1303215 is 5123031.

It is a happy number.

It is not a de Polignac number, because 1303215 - 2¹ = 1303213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 1303194 and 1303203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4092 + ... + 4398.

It is an arithmetic number, because the mean of its divisors is an integer number (131208).

2^1303215 is an apocalyptic number.

1303215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1303215 is a deficient number, since it is larger than the sum of its proper divisors (796113).

1303215 is a wasteful number, since it uses less digits than its factorization.

1303215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 1303215 is about 1141.5844252617. The cubic root of 1303215 is about 109.2291841921.

Adding to 1303215 its product of nonzero digits (90), we get a triangular number (1303305 = T₁₆₁₄).

Adding to 1303215 its reverse (5123031), we get a palindrome (6426246).

The spelling of 1303215 in words is "one million, three hundred three thousand, two hundred fifteen".