3219431 has 2 divisors, whose sum is σ = 3219432. Its totient is φ = 3219430.

The previous prime is 3219421. The next prime is 3219449. The reversal of 3219431 is 1349123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3219431 - 2¹⁴ = 3203047 is a prime.

It is a super-2 number, since 2×3219431² = 20729471927522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3219397 and 3219406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3219401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1609715 + 1609716.

It is an arithmetic number, because the mean of its divisors is an integer number (1609716).

Almost surely, 2^3219431 is an apocalyptic number.

3219431 is a deficient number, since it is larger than the sum of its proper divisors (1).

3219431 is an equidigital number, since it uses as much as digits as its factorization.

3219431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 23.

The square root of 3219431 is about 1794.2772918365. The cubic root of 3219431 is about 147.6589266603.

The spelling of 3219431 in words is "three million, two hundred nineteen thousand, four hundred thirty-one".