40351213 has 4 divisors (see below), whose sum is σ = 46115680. Its totient is φ = 34586748.

The previous prime is 40351187. The next prime is 40351237. The reversal of 40351213 is 31215304.

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 not a de Polignac number, because 40351213 - 2⁹ = 40350701 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 (40351253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2882223 + ... + 2882236.

It is an arithmetic number, because the mean of its divisors is an integer number (11528920).

Almost surely, 2^40351213 is an apocalyptic number.

It is an amenable number.

40351213 is a deficient number, since it is larger than the sum of its proper divisors (5764467).

40351213 is an equidigital number, since it uses as much as digits as its factorization.

40351213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5764466.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 40351213 is about 6352.2604638034. The cubic root of 40351213 is about 342.9932169778.

Adding to 40351213 its reverse (31215304), we get a palindrome (71566517).

The spelling of 40351213 in words is "forty million, three hundred fifty-one thousand, two hundred thirteen".