1315220215 has 24 divisors (see below), whose sum is σ = 1680743952. Its totient is φ = 987816960.

The previous prime is 1315220197. The next prime is 1315220227. The reversal of 1315220215 is 5120225131.

It is not a de Polignac number, because 1315220215 - 2¹⁷ = 1315089143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 751972 + ... + 753718.

It is an arithmetic number, because the mean of its divisors is an integer number (70030998).

Almost surely, 2^1315220215 is an apocalyptic number.

1315220215 is a deficient number, since it is larger than the sum of its proper divisors (365523737).

1315220215 is a wasteful number, since it uses less digits than its factorization.

1315220215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307 (or 2290 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1315220215 is about 36265.9649671700. The cubic root of 1315220215 is about 1095.6356588059.

Adding to 1315220215 its reverse (5120225131), we get a palindrome (6435445346).

The spelling of 1315220215 in words is "one billion, three hundred fifteen million, two hundred twenty thousand, two hundred fifteen".