40243313 has 8 divisors (see below), whose sum is σ = 44923296. Its totient is φ = 35733600.

The previous prime is 40243303. The next prime is 40243319. The reversal of 40243313 is 31334204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40243313 - 2⁸ = 40243057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40243319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42068 + ... + 43013.

It is an arithmetic number, because the mean of its divisors is an integer number (5615412).

Almost surely, 2^40243313 is an apocalyptic number.

40243313 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

40243313 is a deficient number, since it is larger than the sum of its proper divisors (4679983).

40243313 is a wasteful number, since it uses less digits than its factorization.

40243313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85135.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 40243313 is about 6343.7617389054. The cubic root of 40243313 is about 342.6872203543.

Adding to 40243313 its reverse (31334204), we get a palindrome (71577517).

It can be divided in two parts, 4024 and 3313, that added together give a palindrome (7337).

The spelling of 40243313 in words is "forty million, two hundred forty-three thousand, three hundred thirteen".