40363213 has 4 divisors (see below), whose sum is σ = 44032608. Its totient is φ = 36693820.

The previous prime is 40363207. The next prime is 40363231. The reversal of 40363213 is 31236304.

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 40363213 - 2⁹ = 40362701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40363243) 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, 1834681 + ... + 1834702.

It is an arithmetic number, because the mean of its divisors is an integer number (11008152).

Almost surely, 2^40363213 is an apocalyptic number.

It is an amenable number.

40363213 is a deficient number, since it is larger than the sum of its proper divisors (3669395).

40363213 is a wasteful number, since it uses less digits than its factorization.

40363213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3669394.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 40363213 is about 6353.2049392413. The cubic root of 40363213 is about 343.0272143916.

Adding to 40363213 its reverse (31236304), we get a palindrome (71599517).

The spelling of 40363213 in words is "forty million, three hundred sixty-three thousand, two hundred thirteen".