40212311 has 4 divisors (see below), whose sum is σ = 40251624. Its totient is φ = 40173000.

The previous prime is 40212281. The next prime is 40212313. The reversal of 40212311 is 11321204.

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 40212311 - 2¹⁸ = 39950167 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 (40212313) 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, 18080 + ... + 20181.

It is an arithmetic number, because the mean of its divisors is an integer number (10062906).

Almost surely, 2^40212311 is an apocalyptic number.

40212311 is a deficient number, since it is larger than the sum of its proper divisors (39313).

40212311 is a wasteful number, since it uses less digits than its factorization.

40212311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39312.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 40212311 is about 6341.3177652598. The cubic root of 40212311 is about 342.5991997807.

Adding to 40212311 its reverse (11321204), we get a palindrome (51533515).

The spelling of 40212311 in words is "forty million, two hundred twelve thousand, three hundred eleven".