213663303 has 48 divisors (see below), whose sum is σ = 375098880. Its totient is φ = 114478272.

The previous prime is 213663287. The next prime is 213663319. The reversal of 213663303 is 303366312.

213663303 is a `hidden beast` number, since 21 + 3 + 6 + 633 + 0 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (213663287) and next prime (213663319).

It is not a de Polignac number, because 213663303 - 2⁴ = 213663287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213663343) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 122425 + ... + 124157.

It is an arithmetic number, because the mean of its divisors is an integer number (7814560).

Almost surely, 2^213663303 is an apocalyptic number.

213663303 is a deficient number, since it is larger than the sum of its proper divisors (161435577).

213663303 is a wasteful number, since it uses less digits than its factorization.

213663303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868 (or 1865 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

The square root of 213663303 is about 14617.2262416643. The cubic root of 213663303 is about 597.8285424339.

The spelling of 213663303 in words is "two hundred thirteen million, six hundred sixty-three thousand, three hundred three".