40512331 has 4 divisors (see below), whose sum is σ = 40526752. Its totient is φ = 40497912.

The previous prime is 40512317. The next prime is 40512337. The reversal of 40512331 is 13321504.

40512331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40512331 - 2⁷ = 40512203 is a prime.

It is a super-2 number, since 2×40512331² = 3282497926107122, 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 = 40512299 and 40512308.

It is not an unprimeable number, because it can be changed into a prime (40512337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1476 + ... + 9121.

It is an arithmetic number, because the mean of its divisors is an integer number (10131688).

Almost surely, 2^40512331 is an apocalyptic number.

40512331 is a deficient number, since it is larger than the sum of its proper divisors (14421).

40512331 is a wasteful number, since it uses less digits than its factorization.

40512331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14420.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 40512331 is about 6364.9297718042. The cubic root of 40512331 is about 343.4491222450.

Adding to 40512331 its reverse (13321504), we get a palindrome (53833835).

The spelling of 40512331 in words is "forty million, five hundred twelve thousand, three hundred thirty-one".