213454210284 has 72 divisors (see below), whose sum is σ = 639484238848. Its totient is φ = 60986915280.

The previous prime is 213454210283. The next prime is 213454210303. The reversal of 213454210284 is 482012454312.

213454210284 is a `hidden beast` number, since 2 + 1 + 3 + 4 + 542 + 102 + 8 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (213454210283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15679132 + ... + 15692739.

Almost surely, 2^213454210284 is an apocalyptic number.

It is an amenable number.

213454210284 is an abundant number, since it is smaller than the sum of its proper divisors (426030028564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213454210284 is a wasteful number, since it uses less digits than its factorization.

213454210284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31371897 (or 31371883 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

Adding to 213454210284 its reverse (482012454312), we get a palindrome (695466664596).

The spelling of 213454210284 in words is "two hundred thirteen billion, four hundred fifty-four million, two hundred ten thousand, two hundred eighty-four".