213113455 has 8 divisors (see below), whose sum is σ = 256376304. Its totient is φ = 170064000.

The previous prime is 213113447. The next prime is 213113473. The reversal of 213113455 is 554311312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213113455 - 2³ = 213113447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51141 + ... + 55150.

It is an arithmetic number, because the mean of its divisors is an integer number (32047038).

Almost surely, 2^213113455 is an apocalyptic number.

213113455 is a deficient number, since it is larger than the sum of its proper divisors (43262849).

213113455 is a wasteful number, since it uses less digits than its factorization.

213113455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106697.

The product of its digits is 1800, while the sum is 25.

The square root of 213113455 is about 14598.4059061255. The cubic root of 213113455 is about 597.3152781801.

Adding to 213113455 its reverse (554311312), we get a palindrome (767424767).

The spelling of 213113455 in words is "two hundred thirteen million, one hundred thirteen thousand, four hundred fifty-five".