34881281 has 2 divisors, whose sum is σ = 34881282. Its totient is φ = 34881280.

The previous prime is 34881277. The next prime is 34881307. The reversal of 34881281 is 18218843.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33535681 + 1345600 = 5791^2 + 1160^2 .

It is a cyclic number.

It is not a de Polignac number, because 34881281 - 2² = 34881277 is a prime.

It is a super-3 number, since 3×34881281³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is equal to p_2139938 and since 34881281 and 2139938 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 (34881211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17440640 + 17440641.

It is an arithmetic number, because the mean of its divisors is an integer number (17440641).

Almost surely, 2^34881281 is an apocalyptic number.

It is an amenable number.

34881281 is a deficient number, since it is larger than the sum of its proper divisors (1).

34881281 is an equidigital number, since it uses as much as digits as its factorization.

34881281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12288, while the sum is 35.

The square root of 34881281 is about 5906.0376734322. The cubic root of 34881281 is about 326.7363666118.

The spelling of 34881281 in words is "thirty-four million, eight hundred eighty-one thousand, two hundred eighty-one".