3557431 has 2 divisors, whose sum is σ = 3557432. Its totient is φ = 3557430.

The previous prime is 3557381. The next prime is 3557441. The reversal of 3557431 is 1347553.

3557431 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 an emirp because it is prime and its reverse (1347553) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3557431 - 2⁷ = 3557303 is a prime.

It is a super-2 number, since 2×3557431² = 25310630639522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3557431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3557441) 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, 1778715 + 1778716.

It is an arithmetic number, because the mean of its divisors is an integer number (1778716).

Almost surely, 2^3557431 is an apocalyptic number.

3557431 is a deficient number, since it is larger than the sum of its proper divisors (1).

3557431 is an equidigital number, since it uses as much as digits as its factorization.

3557431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 28.

The square root of 3557431 is about 1886.1153199102. The cubic root of 3557431 is about 152.6553965564.

The spelling of 3557431 in words is "three million, five hundred fifty-seven thousand, four hundred thirty-one".