12700381 has 4 divisors (see below), whose sum is σ = 12800512. Its totient is φ = 12600252.

The previous prime is 12700333. The next prime is 12700397. The reversal of 12700381 is 18300721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18300721 = 17 ⋅1076513.

It is a cyclic number.

It is not a de Polignac number, because 12700381 - 2¹⁷ = 12569309 is a prime.

It is a super-2 number, since 2×12700381² = 322599355090322, which contains 22 as substring.

It is a Duffinian number.

12700381 is a modest number, since divided by 381 gives 127 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12700081) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 49875 + ... + 50128.

It is an arithmetic number, because the mean of its divisors is an integer number (3200128).

Almost surely, 2^12700381 is an apocalyptic number.

It is an amenable number.

12700381 is a deficient number, since it is larger than the sum of its proper divisors (100131).

12700381 is a wasteful number, since it uses less digits than its factorization.

12700381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100130.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 12700381 is about 3563.7593914292. The cubic root of 12700381 is about 233.3129884756.

The spelling of 12700381 in words is "twelve million, seven hundred thousand, three hundred eighty-one".