226171381 has 8 divisors (see below), whose sum is σ = 233654528. Its totient is φ = 218700000.

The previous prime is 226171303. The next prime is 226171399. The reversal of 226171381 is 183171622.

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

It is a 7-Lehmer number, since φ(226171381) divides (226171381-1)⁷.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226171381 is a prime.

It is a super-2 number, since 2×226171381² = 102306987166894322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226171181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53806 + ... + 57856.

It is an arithmetic number, because the mean of its divisors is an integer number (29206816).

Almost surely, 2^226171381 is an apocalyptic number.

It is an amenable number.

226171381 is a deficient number, since it is larger than the sum of its proper divisors (7483147).

226171381 is a wasteful number, since it uses less digits than its factorization.

226171381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5883.

The product of its digits is 4032, while the sum is 31.

The square root of 226171381 is about 15038.9953454345. The cubic root of 226171381 is about 609.2738658760.

The spelling of 226171381 in words is "two hundred twenty-six million, one hundred seventy-one thousand, three hundred eighty-one".