40216031 has 2 divisors, whose sum is σ = 40216032. Its totient is φ = 40216030.

The previous prime is 40215997. The next prime is 40216037. The reversal of 40216031 is 13061204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40216031 - 2¹⁴ = 40199647 is a prime.

It is a super-2 number, since 2×40216031² = 3234658298785922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40216037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20108015 + 20108016.

It is an arithmetic number, because the mean of its divisors is an integer number (20108016).

Almost surely, 2^40216031 is an apocalyptic number.

40216031 is a deficient number, since it is larger than the sum of its proper divisors (1).

40216031 is an equidigital number, since it uses as much as digits as its factorization.

40216031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 40216031 is about 6341.6110729057. The cubic root of 40216031 is about 342.6097639561.

Adding to 40216031 its reverse (13061204), we get a palindrome (53277235).

The spelling of 40216031 in words is "forty million, two hundred sixteen thousand, thirty-one".