12381369 has 96 divisors (see below), whose sum is σ = 24514560. Its totient is φ = 5443200.

The previous prime is 12381367. The next prime is 12381373. The reversal of 12381369 is 96318321.

It is not a de Polignac number, because 12381369 - 2¹ = 12381367 is a prime.

It is a super-2 number, since 2×12381369² = 306596596628322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12381361) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 399384 + ... + 399414.

It is an arithmetic number, because the mean of its divisors is an integer number (255360).

Almost surely, 2^12381369 is an apocalyptic number.

12381369 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12381369 is a deficient number, since it is larger than the sum of its proper divisors (12133191).

12381369 is a wasteful number, since it uses less digits than its factorization.

12381369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 84 counting only the distinct ones).

The product of its digits is 7776, while the sum is 33.

The square root of 12381369 is about 3518.7169536637. The cubic root of 12381369 is about 231.3429250112.

The spelling of 12381369 in words is "twelve million, three hundred eighty-one thousand, three hundred sixty-nine".