213113055 has 16 divisors (see below), whose sum is σ = 355806720. Its totient is φ = 108718368.

The previous prime is 213113051. The next prime is 213113057. The reversal of 213113055 is 550311312.

It is not a de Polignac number, because 213113055 - 2² = 213113051 is a prime.

It is a super-2 number, since 2×213113055² = 90834348422866050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213113051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308515 + ... + 309204.

It is an arithmetic number, because the mean of its divisors is an integer number (22237920).

Almost surely, 2^213113055 is an apocalyptic number.

213113055 is a deficient number, since it is larger than the sum of its proper divisors (142693665).

213113055 is a wasteful number, since it uses less digits than its factorization.

213113055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617750.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 213113055 is about 14598.3922059931. The cubic root of 213113055 is about 597.3149044726.

Adding to 213113055 its reverse (550311312), we get a palindrome (763424367).

The spelling of 213113055 in words is "two hundred thirteen million, one hundred thirteen thousand, fifty-five".