3215131 has 2 divisors, whose sum is σ = 3215132. Its totient is φ = 3215130.

The previous prime is 3215119. The next prime is 3215137. The reversal of 3215131 is 1315123.

3215131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3215131 - 2⁵ = 3215099 is a prime.

It is a super-2 number, since 2×3215131² = 20674134694322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3215137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1607565 + 1607566.

It is an arithmetic number, because the mean of its divisors is an integer number (1607566).

Almost surely, 2^3215131 is an apocalyptic number.

3215131 is a deficient number, since it is larger than the sum of its proper divisors (1).

3215131 is an equidigital number, since it uses as much as digits as its factorization.

3215131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90, while the sum is 16.

The square root of 3215131 is about 1793.0786374278. The cubic root of 3215131 is about 147.5931576600.

The spelling of 3215131 in words is "three million, two hundred fifteen thousand, one hundred thirty-one".