213030040 has 16 divisors (see below), whose sum is σ = 479317680. Its totient is φ = 85212000.

The previous prime is 213030029. The next prime is 213030067. The reversal of 213030040 is 40030312.

It is a self number, because there is not a number n which added to its sum of digits gives 213030040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2662836 + ... + 2662915.

It is an arithmetic number, because the mean of its divisors is an integer number (29957355).

Almost surely, 2^213030040 is an apocalyptic number.

213030040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213030040 is an abundant number, since it is smaller than the sum of its proper divisors (266287640).

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

213030040 is a wasteful number, since it uses less digits than its factorization.

213030040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5325762 (or 5325758 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 213030040 is about 14595.5486364850. The cubic root of 213030040 is about 597.2373360404.

Adding to 213030040 its reverse (40030312), we get a palindrome (253060352).

The spelling of 213030040 in words is "two hundred thirteen million, thirty thousand, forty".