40513211 has 4 divisors (see below), whose sum is σ = 41177424. Its totient is φ = 39849000.

The previous prime is 40513177. The next prime is 40513217. The reversal of 40513211 is 11231504.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40513211 - 2¹⁸ = 40251067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40513211.

It is not an unprimeable number, because it can be changed into a prime (40513217) 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, 332015 + ... + 332136.

It is an arithmetic number, because the mean of its divisors is an integer number (10294356).

Almost surely, 2^40513211 is an apocalyptic number.

40513211 is a deficient number, since it is larger than the sum of its proper divisors (664213).

40513211 is an equidigital number, since it uses as much as digits as its factorization.

40513211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664212.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 40513211 is about 6364.9989002356. The cubic root of 40513211 is about 343.4516090026.

Adding to 40513211 its reverse (11231504), we get a palindrome (51744715).

The spelling of 40513211 in words is "forty million, five hundred thirteen thousand, two hundred eleven".