40322831 has 4 divisors (see below), whose sum is σ = 40473000. Its totient is φ = 40172664.

The previous prime is 40322819. The next prime is 40322833. The reversal of 40322831 is 13822304.

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 40322831 - 2⁶ = 40322767 is a prime.

It is a super-2 number, since 2×40322831² = 3251861399709122, 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 = 40322797 and 40322806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40322833) 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, 74681 + ... + 75218.

It is an arithmetic number, because the mean of its divisors is an integer number (10118250).

Almost surely, 2^40322831 is an apocalyptic number.

40322831 is a deficient number, since it is larger than the sum of its proper divisors (150169).

40322831 is a wasteful number, since it uses less digits than its factorization.

40322831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150168.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 40322831 is about 6350.0260629386. The cubic root of 40322831 is about 342.9127805955.

The spelling of 40322831 in words is "forty million, three hundred twenty-two thousand, eight hundred thirty-one".