40135223 has 2 divisors, whose sum is σ = 40135224. Its totient is φ = 40135222.

The previous prime is 40135213. The next prime is 40135229. The reversal of 40135223 is 32253104.

It is a happy number.

40135223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40135223 - 2⁸ = 40134967 is a prime.

It is a super-2 number, since 2×40135223² = 3221672250519458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40135195 and 40135204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40135229) 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 as a sum of consecutive naturals, namely, 20067611 + 20067612.

It is an arithmetic number, because the mean of its divisors is an integer number (20067612).

Almost surely, 2^40135223 is an apocalyptic number.

40135223 is a deficient number, since it is larger than the sum of its proper divisors (1).

40135223 is an equidigital number, since it uses as much as digits as its factorization.

40135223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 40135223 is about 6335.2366175227. The cubic root of 40135223 is about 342.3801360094.

Adding to 40135223 its reverse (32253104), we get a palindrome (72388327).

The spelling of 40135223 in words is "forty million, one hundred thirty-five thousand, two hundred twenty-three".