1307215 has 32 divisors (see below), whose sum is σ = 2056320. Its totient is φ = 778752.

The previous prime is 1307209. The next prime is 1307221. The reversal of 1307215 is 5127031.

It is an interprime number because it is at equal distance from previous prime (1307209) and next prime (1307221).

It is not a de Polignac number, because 1307215 - 2⁵ = 1307183 is a prime.

It is a super-2 number, since 2×1307215² = 3417622112450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1307192 and 1307201.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 76887 + ... + 76903.

It is an arithmetic number, because the mean of its divisors is an integer number (64260).

2^1307215 is an apocalyptic number.

1307215 is a deficient number, since it is larger than the sum of its proper divisors (749105).

1307215 is an equidigital number, since it uses as much as digits as its factorization.

1307215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 1307215 is about 1143.3350340123. The cubic root of 1307215 is about 109.3408236077.

The spelling of 1307215 in words is "one million, three hundred seven thousand, two hundred fifteen".