11403213 has 8 divisors (see below), whose sum is σ = 15558048. Its totient is φ = 7425264.

The previous prime is 11403151. The next prime is 11403221. The reversal of 11403213 is 31230411.

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

It is not a de Polignac number, because 11403213 - 2⁶ = 11403149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11403192 and 11403201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11403283) 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, 44070 + ... + 44327.

It is an arithmetic number, because the mean of its divisors is an integer number (1944756).

Almost surely, 2^11403213 is an apocalyptic number.

It is an amenable number.

11403213 is a deficient number, since it is larger than the sum of its proper divisors (4154835).

11403213 is an equidigital number, since it uses as much as digits as its factorization.

11403213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88443.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 11403213 is about 3376.8643739422. The cubic root of 11403213 is about 225.0828534371.

Adding to 11403213 its reverse (31230411), we get a palindrome (42633624).

The spelling of 11403213 in words is "eleven million, four hundred three thousand, two hundred thirteen".