40319231 has 8 divisors (see below), whose sum is σ = 41132784. Its totient is φ = 39510720.

The previous prime is 40319203. The next prime is 40319239. The reversal of 40319231 is 13291304.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40319231 is a prime.

It is a super-2 number, since 2×40319231² = 3251280776862722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40319197 and 40319206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40319239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17651 + ... + 19803.

It is an arithmetic number, because the mean of its divisors is an integer number (5141598).

Almost surely, 2^40319231 is an apocalyptic number.

40319231 is a deficient number, since it is larger than the sum of its proper divisors (813553).

40319231 is a wasteful number, since it uses less digits than its factorization.

40319231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 40319231 is about 6349.7425932080. The cubic root of 40319231 is about 342.9025752708.

The spelling of 40319231 in words is "forty million, three hundred nineteen thousand, two hundred thirty-one".