3751213 has 4 divisors (see below), whose sum is σ = 3842748. Its totient is φ = 3659680.

The previous prime is 3751207. The next prime is 3751219. The reversal of 3751213 is 3121573.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (3751207) and next prime (3751219).

It can be written as a sum of positive squares in 2 ways, for example, as 2079364 + 1671849 = 1442^2 + 1293^2 .

It is a cyclic number.

It is not a de Polignac number, because 3751213 - 2⁹ = 3750701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3751219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45706 + ... + 45787.

It is an arithmetic number, because the mean of its divisors is an integer number (960687).

Almost surely, 2^3751213 is an apocalyptic number.

It is an amenable number.

3751213 is a deficient number, since it is larger than the sum of its proper divisors (91535).

3751213 is an equidigital number, since it uses as much as digits as its factorization.

3751213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91534.

The product of its digits is 630, while the sum is 22.

The square root of 3751213 is about 1936.8048430340. The cubic root of 3751213 is about 155.3783749275.

Adding to 3751213 its reverse (3121573), we get a palindrome (6872786).

The spelling of 3751213 in words is "three million, seven hundred fifty-one thousand, two hundred thirteen".