3213431 has 8 divisors (see below), whose sum is σ = 3485664. Its totient is φ = 2944800.

The previous prime is 3213421. The next prime is 3213439. The reversal of 3213431 is 1343123.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3213431 - 2¹⁸ = 2951287 is a prime.

It is a super-2 number, since 2×3213431² = 20652277583522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3213439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1145 + ... + 2781.

It is an arithmetic number, because the mean of its divisors is an integer number (435708).

Almost surely, 2^3213431 is an apocalyptic number.

3213431 is a deficient number, since it is larger than the sum of its proper divisors (272233).

3213431 is a wasteful number, since it uses less digits than its factorization.

3213431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801.

The product of its digits is 216, while the sum is 17.

The square root of 3213431 is about 1792.6045297276. The cubic root of 3213431 is about 147.5671397877.

Adding to 3213431 its reverse (1343123), we get a palindrome (4556554).

The spelling of 3213431 in words is "three million, two hundred thirteen thousand, four hundred thirty-one".