354380281 has 2 divisors, whose sum is σ = 354380282. Its totient is φ = 354380280.

The previous prime is 354380263. The next prime is 354380287. The reversal of 354380281 is 182083453.

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., 213744400 + 140635881 = 14620^2 + 11859^2 .

It is a cyclic number.

It is not a de Polignac number, because 354380281 - 2¹⁹ = 353855993 is a prime.

It is a super-2 number, since 2×354380281² = 251170767123277922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (354380287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177190140 + 177190141.

It is an arithmetic number, because the mean of its divisors is an integer number (177190141).

Almost surely, 2^354380281 is an apocalyptic number.

It is an amenable number.

354380281 is a deficient number, since it is larger than the sum of its proper divisors (1).

354380281 is an equidigital number, since it uses as much as digits as its factorization.

354380281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 354380281 is about 18824.9908632116. The cubic root of 354380281 is about 707.6576122529.

The spelling of 354380281 in words is "three hundred fifty-four million, three hundred eighty thousand, two hundred eighty-one".