9503213 has 12 divisors (see below), whose sum is σ = 10116540. Its totient is φ = 8914752.

The previous prime is 9503203. The next prime is 9503231. The reversal of 9503213 is 3123059.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5189284 + 4313929 = 2278^2 + 2077^2 .

It is not a de Polignac number, because 9503213 - 2⁶ = 9503149 is a prime.

It is a super-2 number, since 2×9503213² = 180622114646738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9503203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130145 + ... + 130217.

It is an arithmetic number, because the mean of its divisors is an integer number (843045).

Almost surely, 2^9503213 is an apocalyptic number.

It is an amenable number.

9503213 is a deficient number, since it is larger than the sum of its proper divisors (613327).

9503213 is an equidigital number, since it uses as much as digits as its factorization.

9503213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 9503213 is about 3082.7281748477. The cubic root of 9503213 is about 211.8150531902.

The spelling of 9503213 in words is "nine million, five hundred three thousand, two hundred thirteen".