40311318 has 32 divisors (see below), whose sum is σ = 89081856. Its totient is φ = 12096128.

The previous prime is 40311311. The next prime is 40311319. The reversal of 40311318 is 81311304.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40311294 and 40311303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40311311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6246 + ... + 10937.

It is an arithmetic number, because the mean of its divisors is an integer number (2783808).

Almost surely, 2^40311318 is an apocalyptic number.

40311318 is an abundant number, since it is smaller than the sum of its proper divisors (48770538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40311318 is a wasteful number, since it uses less digits than its factorization.

40311318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17228.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 40311318 is about 6349.1194665087. The cubic root of 40311318 is about 342.8801412648.

The spelling of 40311318 in words is "forty million, three hundred eleven thousand, three hundred eighteen".