2133403 has 2 divisors, whose sum is σ = 2133404. Its totient is φ = 2133402.

The previous prime is 2133379. The next prime is 2133407. The reversal of 2133403 is 3043312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2133403 - 2⁹ = 2132891 is a prime.

It is an Ulam number.

It is equal to p₁₅₈₁₁₀ and since 2133403 and 158110 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (2133407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066701 + 1066702.

It is an arithmetic number, because the mean of its divisors is an integer number (1066702).

2^2133403 is an apocalyptic number.

2133403 is a deficient number, since it is larger than the sum of its proper divisors (1).

2133403 is an equidigital number, since it uses as much as digits as its factorization.

2133403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 2133403 is about 1460.6173352388. The cubic root of 2133403 is about 128.7333192327.

Adding to 2133403 its reverse (3043312), we get a palindrome (5176715).

Subtracting 2133403 from its reverse (3043312), we obtain a palindrome (909909).

The spelling of 2133403 in words is "two million, one hundred thirty-three thousand, four hundred three".