40045311 has 6 divisors (see below), whose sum is σ = 57843240. Its totient is φ = 26696868.

The previous prime is 40045309. The next prime is 40045321. The reversal of 40045311 is 11354004.

It is a happy number.

It is not a de Polignac number, because 40045311 - 2¹ = 40045309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40045301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2224731 + ... + 2224748.

It is an arithmetic number, because the mean of its divisors is an integer number (9640540).

Almost surely, 2^40045311 is an apocalyptic number.

40045311 is a deficient number, since it is larger than the sum of its proper divisors (17797929).

40045311 is a wasteful number, since it uses less digits than its factorization.

40045311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4449485 (or 4449482 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 40045311 is about 6328.1364555452. The cubic root of 40045311 is about 342.1242751394.

Adding to 40045311 its reverse (11354004), we get a palindrome (51399315).

The spelling of 40045311 in words is "forty million, forty-five thousand, three hundred eleven".