213140454 has 32 divisors (see below), whose sum is σ = 435767040. Its totient is φ = 69474912.

The previous prime is 213140449. The next prime is 213140479. The reversal of 213140454 is 454041312.

213140454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×213140454³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113229 + ... + 115095.

It is an arithmetic number, because the mean of its divisors is an integer number (13617720).

Almost surely, 2^213140454 is an apocalyptic number.

213140454 is an abundant number, since it is smaller than the sum of its proper divisors (222626586).

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

213140454 is a wasteful number, since it uses less digits than its factorization.

213140454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 213140454 is about 14599.3306010926. The cubic root of 213140454 is about 597.3405014181.

Adding to 213140454 its reverse (454041312), we get a palindrome (667181766).

The spelling of 213140454 in words is "two hundred thirteen million, one hundred forty thousand, four hundred fifty-four".