213604263 has 32 divisors (see below), whose sum is σ = 325543680. Its totient is φ = 138348000.

The previous prime is 213604231. The next prime is 213604273. The reversal of 213604263 is 362406312.

It is not a de Polignac number, because 213604263 - 2⁵ = 213604231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213604273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 291045 + ... + 291777.

It is an arithmetic number, because the mean of its divisors is an integer number (10173240).

Almost surely, 2^213604263 is an apocalyptic number.

213604263 is a deficient number, since it is larger than the sum of its proper divisors (111939417).

213604263 is a wasteful number, since it uses less digits than its factorization.

213604263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036 (or 1030 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 213604263 is about 14615.2065671341. The cubic root of 213604263 is about 597.7734728483.

The spelling of 213604263 in words is "two hundred thirteen million, six hundred four thousand, two hundred sixty-three".