3917131 has 2 divisors, whose sum is σ = 3917132. Its totient is φ = 3917130.

The previous prime is 3917119. The next prime is 3917149. The reversal of 3917131 is 1317193.

It is a weak prime.

It is an emirp because it is prime and its reverse (1317193) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3917131 - 2¹⁷ = 3786059 is a prime.

It is a super-2 number, since 2×3917131² = 30687830542322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3917096 and 3917105.

It is not a weakly prime, because it can be changed into another prime (3917101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1958565 + 1958566.

It is an arithmetic number, because the mean of its divisors is an integer number (1958566).

Almost surely, 2^3917131 is an apocalyptic number.

3917131 is a deficient number, since it is larger than the sum of its proper divisors (1).

3917131 is an equidigital number, since it uses as much as digits as its factorization.

3917131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 567, while the sum is 25.

The square root of 3917131 is about 1979.1743227922. The cubic root of 3917131 is about 157.6362271456.

The spelling of 3917131 in words is "three million, nine hundred seventeen thousand, one hundred thirty-one".