201411381 has 8 divisors (see below), whose sum is σ = 282682720. Its totient is φ = 127207152.

The previous prime is 201411373. The next prime is 201411389. The reversal of 201411381 is 183114102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (201411373) and next prime (201411389).

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

It is not a de Polignac number, because 201411381 - 2³ = 201411373 is a prime.

It is a super-2 number, since 2×201411381² = 81133088792654322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201411389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1766710 + ... + 1766823.

It is an arithmetic number, because the mean of its divisors is an integer number (35335340).

Almost surely, 2^201411381 is an apocalyptic number.

It is an amenable number.

201411381 is a deficient number, since it is larger than the sum of its proper divisors (81271339).

201411381 is a wasteful number, since it uses less digits than its factorization.

201411381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3533555.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 201411381 is about 14191.9477521586. The cubic root of 201411381 is about 586.1759587224.

Adding to 201411381 its reverse (183114102), we get a palindrome (384525483).

The spelling of 201411381 in words is "two hundred one million, four hundred eleven thousand, three hundred eighty-one".