40806831 has 8 divisors (see below), whose sum is σ = 58594480. Its totient is φ = 25111872.

The previous prime is 40806823. The next prime is 40806839. The reversal of 40806831 is 13860804.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40806823) and next prime (40806839).

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

It is not a de Polignac number, because 40806831 - 2³ = 40806823 is a prime.

It is a super-2 number, since 2×40806831² = 3330394912525122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40806839) 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, 523126 + ... + 523203.

It is an arithmetic number, because the mean of its divisors is an integer number (7324310).

Almost surely, 2^40806831 is an apocalyptic number.

40806831 is a deficient number, since it is larger than the sum of its proper divisors (17787649).

40806831 is a wasteful number, since it uses less digits than its factorization.

40806831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046345.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 40806831 is about 6388.0224639555. The cubic root of 40806831 is about 344.2793358256.

The spelling of 40806831 in words is "forty million, eight hundred six thousand, eight hundred thirty-one".