40051313 has 4 divisors (see below), whose sum is σ = 40615488. Its totient is φ = 39487140.

The previous prime is 40051309. The next prime is 40051339. The reversal of 40051313 is 31315004.

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 40051313 - 2² = 40051309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40051291 and 40051300.

It is not an unprimeable number, because it can be changed into a prime (40051393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281981 + ... + 282122.

It is an arithmetic number, because the mean of its divisors is an integer number (10153872).

Almost surely, 2^40051313 is an apocalyptic number.

It is an amenable number.

40051313 is a deficient number, since it is larger than the sum of its proper divisors (564175).

40051313 is an equidigital number, since it uses as much as digits as its factorization.

40051313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564174.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 40051313 is about 6328.6106690173. The cubic root of 40051313 is about 342.1413668393.

Adding to 40051313 its reverse (31315004), we get a palindrome (71366317).

The spelling of 40051313 in words is "forty million, fifty-one thousand, three hundred thirteen".