354227281 has 2 divisors, whose sum is σ = 354227282. Its totient is φ = 354227280.

The previous prime is 354227267. The next prime is 354227287. The reversal of 354227281 is 182722453.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 327031056 + 27196225 = 18084^2 + 5215^2 .

It is a cyclic number.

It is not a de Polignac number, because 354227281 - 2¹¹ = 354225233 is a prime.

It is a super-3 number, since 3×354227281³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is equal to p_19018276 and since 354227281 and 19018276 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (354227287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177113640 + 177113641.

It is an arithmetic number, because the mean of its divisors is an integer number (177113641).

Almost surely, 2^354227281 is an apocalyptic number.

It is an amenable number.

354227281 is a deficient number, since it is larger than the sum of its proper divisors (1).

354227281 is an equidigital number, since it uses as much as digits as its factorization.

354227281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 34.

The square root of 354227281 is about 18820.9266775045. The cubic root of 354227281 is about 707.5557563221. Note that the first 3 decimals are identical.

The spelling of 354227281 in words is "three hundred fifty-four million, two hundred twenty-seven thousand, two hundred eighty-one".