40318351 has 4 divisors (see below), whose sum is σ = 40448304. Its totient is φ = 40188400.

The previous prime is 40318331. The next prime is 40318363. The reversal of 40318351 is 15381304.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40318351 - 2¹⁹ = 39794063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40318331) 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, 64510 + ... + 65131.

It is an arithmetic number, because the mean of its divisors is an integer number (10112076).

Almost surely, 2^40318351 is an apocalyptic number.

40318351 is a deficient number, since it is larger than the sum of its proper divisors (129953).

40318351 is a wasteful number, since it uses less digits than its factorization.

40318351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129952.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 40318351 is about 6349.6732986824. The cubic root of 40318351 is about 342.9000805434.

Adding to 40318351 its reverse (15381304), we get a palindrome (55699655).

The spelling of 40318351 in words is "forty million, three hundred eighteen thousand, three hundred fifty-one".