213315040 has 24 divisors (see below), whose sum is σ = 503957160. Its totient is φ = 85325952.

The previous prime is 213315017. The next prime is 213315049. The reversal of 213315040 is 40513312.

It is a junction number, because it is equal to n+sod(n) for n = 213314999 and 213315017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213315049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666450 + ... + 666769.

It is an arithmetic number, because the mean of its divisors is an integer number (20998215).

Almost surely, 2^213315040 is an apocalyptic number.

213315040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213315040 is an abundant number, since it is smaller than the sum of its proper divisors (290642120).

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

213315040 is a wasteful number, since it uses less digits than its factorization.

213315040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333234 (or 1333226 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 213315040 is about 14605.3086239216. The cubic root of 213315040 is about 597.5035532547.

Adding to 213315040 its reverse (40513312), we get a palindrome (253828352).

The spelling of 213315040 in words is "two hundred thirteen million, three hundred fifteen thousand, forty".