4003213 has 2 divisors, whose sum is σ = 4003214. Its totient is φ = 4003212.

The previous prime is 4003201. The next prime is 4003231. The reversal of 4003213 is 3123004.

Together with next prime (4003231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2832489 + 1170724 = 1683^2 + 1082^2 .

It is a cyclic number.

It is not a de Polignac number, because 4003213 - 2¹³ = 3995021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4003193 and 4003202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4003253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2001606 + 2001607.

It is an arithmetic number, because the mean of its divisors is an integer number (2001607).

Almost surely, 2^4003213 is an apocalyptic number.

It is an amenable number.

4003213 is a deficient number, since it is larger than the sum of its proper divisors (1).

4003213 is an equidigital number, since it uses as much as digits as its factorization.

4003213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 4003213 is about 2000.8030887621. The cubic root of 4003213 is about 158.7825964850.

Adding to 4003213 its reverse (3123004), we get a palindrome (7126217).

The spelling of 4003213 in words is "four million, three thousand, two hundred thirteen".