34816381 has 2 divisors, whose sum is σ = 34816382. Its totient is φ = 34816380.

The previous prime is 34816363. The next prime is 34816387. The reversal of 34816381 is 18361843.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29484900 + 5331481 = 5430^2 + 2309^2 .

It is a cyclic number.

It is not a de Polignac number, because 34816381 - 2⁷ = 34816253 is a prime.

It is a super-2 number, since 2×34816381² = 2424360771874322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34816387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17408190 + 17408191.

It is an arithmetic number, because the mean of its divisors is an integer number (17408191).

Almost surely, 2^34816381 is an apocalyptic number.

It is an amenable number.

34816381 is a deficient number, since it is larger than the sum of its proper divisors (1).

34816381 is an equidigital number, since it uses as much as digits as its factorization.

34816381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 34.

The square root of 34816381 is about 5900.5407379324. The cubic root of 34816381 is about 326.5335992570.

The spelling of 34816381 in words is "thirty-four million, eight hundred sixteen thousand, three hundred eighty-one".