12381370 has 8 divisors (see below), whose sum is σ = 22286484. Its totient is φ = 4952544.

The previous prime is 12381367. The next prime is 12381373. The reversal of 12381370 is 7318321.

It is an interprime number because it is at equal distance from previous prime (12381367) and next prime (12381373).

It can be written as a sum of positive squares in 2 ways, for example, as 11909401 + 471969 = 3451^2 + 687^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12381373) 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, 619059 + ... + 619078.

Almost surely, 2^12381370 is an apocalyptic number.

12381370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12381370 is a deficient number, since it is larger than the sum of its proper divisors (9905114).

12381370 is a wasteful number, since it uses less digits than its factorization.

12381370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238144.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 12381370 is about 3518.7170957609. The cubic root of 12381370 is about 231.3429312394.

Adding to 12381370 its reverse (7318321), we get a palindrome (19699691).

The spelling of 12381370 in words is "twelve million, three hundred eighty-one thousand, three hundred seventy".