1253213 has 4 divisors (see below), whose sum is σ = 1349628. Its totient is φ = 1156800.

The previous prime is 1253171. The next prime is 1253249. The reversal of 1253213 is 3123521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 58564 + 1194649 = 242^2 + 1093^2 .

It is a cyclic number.

It is not a de Polignac number, because 1253213 - 2⁸ = 1252957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1253191 and 1253200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253513) 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, 48188 + ... + 48213.

It is an arithmetic number, because the mean of its divisors is an integer number (337407).

2^1253213 is an apocalyptic number.

1253213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1253213 is a deficient number, since it is larger than the sum of its proper divisors (96415).

1253213 is an equidigital number, since it uses as much as digits as its factorization.

1253213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96414.

The product of its digits is 180, while the sum is 17.

The square root of 1253213 is about 1119.4699638668. The cubic root of 1253213 is about 107.8139515172.

Adding to 1253213 its reverse (3123521), we get a palindrome (4376734).

The spelling of 1253213 in words is "one million, two hundred fifty-three thousand, two hundred thirteen".