213434004 has 36 divisors (see below), whose sum is σ = 579322464. Its totient is φ = 60980976.

The previous prime is 213433999. The next prime is 213434017. The reversal of 213434004 is 400434312.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 180904 + ... + 182079.

Almost surely, 2^213434004 is an apocalyptic number.

It is an amenable number.

213434004 is an abundant number, since it is smaller than the sum of its proper divisors (365888460).

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

213434004 is a wasteful number, since it uses less digits than its factorization.

213434004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363004 (or 362995 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 213434004 is about 14609.3806850256. The cubic root of 213434004 is about 597.6146068446.

Adding to 213434004 its reverse (400434312), we get a palindrome (613868316).

The spelling of 213434004 in words is "two hundred thirteen million, four hundred thirty-four thousand, four".