40845313 has 4 divisors (see below), whose sum is σ = 41795248. Its totient is φ = 39895380.

The previous prime is 40845293. The next prime is 40845331. The reversal of 40845313 is 31354804.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40845313 - 2⁵ = 40845281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40845353) 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, 474903 + ... + 474988.

It is an arithmetic number, because the mean of its divisors is an integer number (10448812).

It is a Proth number, since it is equal to 2493 ⋅ 2¹⁴ + 1 and 2493 < 2¹⁴.

Almost surely, 2^40845313 is an apocalyptic number.

40845313 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

40845313 is a deficient number, since it is larger than the sum of its proper divisors (949935).

40845313 is an equidigital number, since it uses as much as digits as its factorization.

40845313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949934.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 40845313 is about 6391.0337974384. The cubic root of 40845313 is about 344.3875235536.

The spelling of 40845313 in words is "forty million, eight hundred forty-five thousand, three hundred thirteen".