1381343215 has 16 divisors (see below), whose sum is σ = 1897758720. Its totient is φ = 945534240.

The previous prime is 1381343191. The next prime is 1381343251. The reversal of 1381343215 is 5123431831.

It is a happy number.

It is not a de Polignac number, because 1381343215 - 2²⁷ = 1247125487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14575 + ... + 54544.

It is an arithmetic number, because the mean of its divisors is an integer number (118609920).

Almost surely, 2^1381343215 is an apocalyptic number.

1381343215 is a deficient number, since it is larger than the sum of its proper divisors (516415505).

1381343215 is an equidigital number, since it uses as much as digits as its factorization.

1381343215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69702.

The product of its digits is 8640, while the sum is 31.

The square root of 1381343215 is about 37166.4259110289. The cubic root of 1381343215 is about 1113.6973841924.

The spelling of 1381343215 in words is "one billion, three hundred eighty-one million, three hundred forty-three thousand, two hundred fifteen".