3681031 has 2 divisors, whose sum is σ = 3681032. Its totient is φ = 3681030.

The previous prime is 3681023. The next prime is 3681037. The reversal of 3681031 is 1301863.

It is a strong prime.

It is an emirp because it is prime and its reverse (1301863) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3681031 - 2³ = 3681023 is a prime.

It is a super-2 number, since 2×3681031² = 27099978445922, which contains 22 as substring.

It is equal to p₂₆₂₁₃₈ and since 3681031 and 262138 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 3680993 and 3681011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3681037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1840515 + 1840516.

It is an arithmetic number, because the mean of its divisors is an integer number (1840516).

Almost surely, 2^3681031 is an apocalyptic number.

3681031 is a deficient number, since it is larger than the sum of its proper divisors (1).

3681031 is an equidigital number, since it uses as much as digits as its factorization.

3681031 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 3681031 is about 1918.6013134573. The cubic root of 3681031 is about 154.4032692579.

Adding to 3681031 its reverse (1301863), we get a palindrome (4982894).

The spelling of 3681031 in words is "three million, six hundred eighty-one thousand, thirty-one".