354243042023281 has 2 divisors, whose sum is σ = 354243042023282. Its totient is φ = 354243042023280.

The previous prime is 354243042023267. The next prime is 354243042023317. The reversal of 354243042023281 is 182320240342453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 339604452289600 + 14638589733681 = 18428360^2 + 3826041^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354243042023281 is a prime.

It is a super-3 number, since 3×354243042023281³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (354243042023251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177121521011640 + 177121521011641.

It is an arithmetic number, because the mean of its divisors is an integer number (177121521011641).

Almost surely, 2^{354243042023281} is an apocalyptic number.

It is an amenable number.

354243042023281 is a deficient number, since it is larger than the sum of its proper divisors (1).

354243042023281 is an equidigital number, since it uses as much as digits as its factorization.

354243042023281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1105920, while the sum is 43.

The spelling of 354243042023281 in words is "three hundred fifty-four trillion, two hundred forty-three billion, forty-two million, twenty-three thousand, two hundred eighty-one".