40212031 has 2 divisors, whose sum is σ = 40212032. Its totient is φ = 40212030.

The previous prime is 40212017. The next prime is 40212041. The reversal of 40212031 is 13021204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40212031 - 2⁹ = 40211519 is a prime.

It is a super-2 number, since 2×40212031² = 3234014874289922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40212041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20106015 + 20106016.

It is an arithmetic number, because the mean of its divisors is an integer number (20106016).

Almost surely, 2^40212031 is an apocalyptic number.

40212031 is a deficient number, since it is larger than the sum of its proper divisors (1).

40212031 is an equidigital number, since it uses as much as digits as its factorization.

40212031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 40212031 is about 6341.2956877913. The cubic root of 40212031 is about 342.5984046013.

Adding to 40212031 its reverse (13021204), we get a palindrome (53233235).

It can be divided in two parts, 4021203 and 1, that added together give a palindrome (4021204).

The spelling of 40212031 in words is "forty million, two hundred twelve thousand, thirty-one".