213552403 has 2 divisors, whose sum is σ = 213552404. Its totient is φ = 213552402.

The previous prime is 213552389. The next prime is 213552421. The reversal of 213552403 is 304255312.

213552403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213552403 is a prime.

It is not a weakly prime, because it can be changed into another prime (213552463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106776201 + 106776202.

It is an arithmetic number, because the mean of its divisors is an integer number (106776202).

Almost surely, 2^213552403 is an apocalyptic number.

213552403 is a deficient number, since it is larger than the sum of its proper divisors (1).

213552403 is an equidigital number, since it uses as much as digits as its factorization.

213552403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 213552403 is about 14613.4322799266. The cubic root of 213552403 is about 597.7250920388.

The spelling of 213552403 in words is "two hundred thirteen million, five hundred fifty-two thousand, four hundred three".