3405431 has 2 divisors, whose sum is σ = 3405432. Its totient is φ = 3405430.

The previous prime is 3405397. The next prime is 3405463. The reversal of 3405431 is 1345043.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3405431 is a prime.

It is a super-2 number, since 2×3405431² = 23193920591522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3405131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1702715 + 1702716.

It is an arithmetic number, because the mean of its divisors is an integer number (1702716).

Almost surely, 2^3405431 is an apocalyptic number.

3405431 is a deficient number, since it is larger than the sum of its proper divisors (1).

3405431 is an equidigital number, since it uses as much as digits as its factorization.

3405431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 3405431 is about 1845.3809904732. The cubic root of 3405431 is about 150.4494813941.

The spelling of 3405431 in words is "three million, four hundred five thousand, four hundred thirty-one".