213115014 has 144 divisors (see below), whose sum is σ = 564677568. Its totient is φ = 57867264.

The previous prime is 213115013. The next prime is 213115031. The reversal of 213115014 is 410511312.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213115013) 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 71 ways as a sum of consecutive naturals, for example, 2197014 + ... + 2197110.

It is an arithmetic number, because the mean of its divisors is an integer number (3921372).

Almost surely, 2^213115014 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213115014, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282338784).

213115014 is an abundant number, since it is smaller than the sum of its proper divisors (351562554).

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

213115014 is a wasteful number, since it uses less digits than its factorization.

213115014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 209 counting only the distinct ones).

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

The square root of 213115014 is about 14598.4593022689. The cubic root of 213115014 is about 597.3167347004.

Adding to 213115014 its reverse (410511312), we get a palindrome (623626326).

The spelling of 213115014 in words is "two hundred thirteen million, one hundred fifteen thousand, fourteen".