213130040 has 16 divisors (see below), whose sum is σ = 479542680. Its totient is φ = 85252000.

The previous prime is 213130033. The next prime is 213130063. The reversal of 213130040 is 40031312.

It is a junction number, because it is equal to n+sod(n) for n = 213129997 and 213130024.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2664086 + ... + 2664165.

Almost surely, 2^213130040 is an apocalyptic number.

213130040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213130040 is an abundant number, since it is smaller than the sum of its proper divisors (266412640).

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

213130040 is a wasteful number, since it uses less digits than its factorization.

213130040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5328262 (or 5328258 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 213130040 is about 14598.9739365477. The cubic root of 213130040 is about 597.3307726138.

Adding to 213130040 its reverse (40031312), we get a palindrome (253161352).

The spelling of 213130040 in words is "two hundred thirteen million, one hundred thirty thousand, forty".