43401213 has 12 divisors (see below), whose sum is σ = 63300640. Its totient is φ = 28652616.

The previous prime is 43401203. The next prime is 43401229. The reversal of 43401213 is 31210434.

It is not a de Polignac number, because 43401213 - 2²¹ = 41304061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43401203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22483 + ... + 24336.

Almost surely, 2^43401213 is an apocalyptic number.

It is an amenable number.

43401213 is a deficient number, since it is larger than the sum of its proper divisors (19899427).

43401213 is a wasteful number, since it uses less digits than its factorization.

43401213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46928 (or 46925 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 43401213 is about 6587.9596993303. The cubic root of 43401213 is about 351.4260538473.

Adding to 43401213 its reverse (31210434), we get a palindrome (74611647).

The spelling of 43401213 in words is "forty-three million, four hundred one thousand, two hundred thirteen".