40352213 has 4 divisors (see below), whose sum is σ = 44020608. Its totient is φ = 36683820.

The previous prime is 40352197. The next prime is 40352233. The reversal of 40352213 is 31225304.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40352213 - 2⁴ = 40352197 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 (40352233) 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, 1834181 + ... + 1834202.

It is an arithmetic number, because the mean of its divisors is an integer number (11005152).

Almost surely, 2^40352213 is an apocalyptic number.

It is an amenable number.

40352213 is a deficient number, since it is larger than the sum of its proper divisors (3668395).

40352213 is a wasteful number, since it uses less digits than its factorization.

40352213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3668394.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 40352213 is about 6352.3391754534. The cubic root of 40352213 is about 342.9960503530.

Adding to 40352213 its reverse (31225304), we get a palindrome (71577517).

It can be divided in two parts, 40 and 352213, that added together give a palindrome (352253).

The spelling of 40352213 in words is "forty million, three hundred fifty-two thousand, two hundred thirteen".