3133531 has 2 divisors, whose sum is σ = 3133532. Its totient is φ = 3133530.

The previous prime is 3133513. The next prime is 3133541. The reversal of 3133531 is 1353313.

Together with previous prime (3133513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3133531 - 2⁹ = 3133019 is a prime.

It is a super-2 number, since 2×3133531² = 19638033055922, which contains 22 as substring.

3133531 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3133499 and 3133508.

It is not a weakly prime, because it can be changed into another prime (3133541) 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, 1566765 + 1566766.

It is an arithmetic number, because the mean of its divisors is an integer number (1566766).

Almost surely, 2^3133531 is an apocalyptic number.

3133531 is a deficient number, since it is larger than the sum of its proper divisors (1).

3133531 is an equidigital number, since it uses as much as digits as its factorization.

3133531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 405, while the sum is 19.

The square root of 3133531 is about 1770.1782396132. The cubic root of 3133531 is about 146.3338049405. Note that the first 3 decimals are identical.

Adding to 3133531 its reverse (1353313), we get a palindrome (4486844).

It can be divided in two parts, 313 and 3531, that added together give a square (3844 = 62²).

The spelling of 3133531 in words is "three million, one hundred thirty-three thousand, five hundred thirty-one".