40313 has 8 divisors (see below), whose sum is σ = 49728. Its totient is φ = 31824.

The previous prime is 40289. The next prime is 40343. The reversal of 40313 is 31304.

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

It is not a de Polignac number, because 40313 - 2¹² = 36217 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40294 and 40303.

It is not an unprimeable number, because it can be changed into a prime (40343) 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, 131 + ... + 312.

It is an arithmetic number, because the mean of its divisors is an integer number (6216).

2⁴⁰³¹³ is an apocalyptic number.

It is an amenable number.

40313 is a deficient number, since it is larger than the sum of its proper divisors (9415).

40313 is a wasteful number, since it uses less digits than its factorization.

40313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 40313 is about 200.7809751944. The cubic root of 40313 is about 34.2884910119.

Adding to 40313 its reverse (31304), we get a palindrome (71617).

Subtracting from 40313 its reverse (31304), we obtain a palindrome (9009).

It can be divided in two parts, 40 and 313, that added together give a palindrome (353).

The spelling of 40313 in words is "forty thousand, three hundred thirteen".