40530331 has 2 divisors, whose sum is σ = 40530332. Its totient is φ = 40530330.

The previous prime is 40530323. The next prime is 40530341. The reversal of 40530331 is 13303504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40530331 - 2³ = 40530323 is a prime.

It is a super-2 number, since 2×40530331² = 3285415461939122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40530299 and 40530308.

It is not a weakly prime, because it can be changed into another prime (40530341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20265165 + 20265166.

It is an arithmetic number, because the mean of its divisors is an integer number (20265166).

Almost surely, 2^40530331 is an apocalyptic number.

40530331 is a deficient number, since it is larger than the sum of its proper divisors (1).

40530331 is an equidigital number, since it uses as much as digits as its factorization.

40530331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 40530331 is about 6366.3436130954. The cubic root of 40530331 is about 343.4999805778.

Adding to 40530331 its reverse (13303504), we get a palindrome (53833835).

The spelling of 40530331 in words is "forty million, five hundred thirty thousand, three hundred thirty-one".