3031381 has 2 divisors, whose sum is σ = 3031382. Its totient is φ = 3031380.

The previous prime is 3031351. The next prime is 3031387. The reversal of 3031381 is 1831303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1612900 + 1418481 = 1270^2 + 1191^2 .

It is a cyclic number.

It is not a de Polignac number, because 3031381 - 2⁹ = 3030869 is a prime.

It is a super-2 number, since 2×3031381² = 18378541534322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3031387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1515690 + 1515691.

It is an arithmetic number, because the mean of its divisors is an integer number (1515691).

Almost surely, 2^3031381 is an apocalyptic number.

It is an amenable number.

3031381 is a deficient number, since it is larger than the sum of its proper divisors (1).

3031381 is an equidigital number, since it uses as much as digits as its factorization.

3031381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 3031381 is about 1741.0861552491. The cubic root of 3031381 is about 144.7260940930.

Adding to 3031381 its reverse (1831303), we get a palindrome (4862684).

The spelling of 3031381 in words is "three million, thirty-one thousand, three hundred eighty-one".