3061381 has 2 divisors, whose sum is σ = 3061382. Its totient is φ = 3061380.

The previous prime is 3061379. The next prime is 3061391. The reversal of 3061381 is 1831603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2873025 + 188356 = 1695^2 + 434^2 .

It is a cyclic number.

It is not a de Polignac number, because 3061381 - 2¹ = 3061379 is a prime.

It is a super-2 number, since 2×3061381² = 18744107254322, which contains 22 as substring.

Together with 3061379, it forms a pair of twin primes.

3061381 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3061301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1530690 + 1530691.

It is an arithmetic number, because the mean of its divisors is an integer number (1530691).

Almost surely, 2^3061381 is an apocalyptic number.

It is an amenable number.

3061381 is a deficient number, since it is larger than the sum of its proper divisors (1).

3061381 is an equidigital number, since it uses as much as digits as its factorization.

3061381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 3061381 is about 1749.6802565040. The cubic root of 3061381 is about 145.2019540246.

Adding to 3061381 its reverse (1831603), we get a palindrome (4892984).

The spelling of 3061381 in words is "three million, sixty-one thousand, three hundred eighty-one".