213115104 has 48 divisors (see below), whose sum is σ = 621588240. Its totient is φ = 71038080.

The previous prime is 213115099. The next prime is 213115109. The reversal of 213115104 is 401511312.

It is an interprime number because it is at equal distance from previous prime (213115099) and next prime (213115109).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213115109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122467 + ... + 124194.

It is an arithmetic number, because the mean of its divisors is an integer number (12949755).

Almost surely, 2^213115104 is an apocalyptic number.

213115104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

213115104 is an abundant number, since it is smaller than the sum of its proper divisors (408473136).

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

213115104 is a wasteful number, since it uses less digits than its factorization.

213115104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246680 (or 246666 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 213115104 is about 14598.4623847856. The cubic root of 213115104 is about 597.3168187841.

Adding to 213115104 its reverse (401511312), we get a palindrome (614626416).

The spelling of 213115104 in words is "two hundred thirteen million, one hundred fifteen thousand, one hundred four".