213400005 has 64 divisors (see below), whose sum is σ = 423886848. Its totient is φ = 89268480.

The previous prime is 213399983. The next prime is 213400007. The reversal of 213400005 is 500004312.

213400005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213400005 - 2¹³ = 213391813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213400007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 172740 + ... + 173970.

It is an arithmetic number, because the mean of its divisors is an integer number (6623232).

Almost surely, 2^213400005 is an apocalyptic number.

It is an amenable number.

213400005 is a deficient number, since it is larger than the sum of its proper divisors (210486843).

213400005 is a wasteful number, since it uses less digits than its factorization.

213400005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 213400005 is about 14608.2170369967. The cubic root of 213400005 is about 597.5828727916.

Adding to 213400005 its reverse (500004312), we get a palindrome (713404317).

The spelling of 213400005 in words is "two hundred thirteen million, four hundred thousand, five".