40680431 has 8 divisors (see below), whose sum is σ = 44637264. Its totient is φ = 36766720.

The previous prime is 40680421. The next prime is 40680449. The reversal of 40680431 is 13408604.

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-40680431 is a prime.

It is a super-2 number, since 2×40680431² = 3309794932691522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40680431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40680421) 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, 8786 + ... + 12591.

It is an arithmetic number, because the mean of its divisors is an integer number (5579658).

Almost surely, 2^40680431 is an apocalyptic number.

40680431 is a deficient number, since it is larger than the sum of its proper divisors (3956833).

40680431 is a wasteful number, since it uses less digits than its factorization.

40680431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21561.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 40680431 is about 6378.1212751092. The cubic root of 40680431 is about 343.9234973874.

The spelling of 40680431 in words is "forty million, six hundred eighty thousand, four hundred thirty-one".