40434311 has 2 divisors, whose sum is σ = 40434312. Its totient is φ = 40434310.

The previous prime is 40434307. The next prime is 40434367. The reversal of 40434311 is 11343404.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40434311 - 2² = 40434307 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40434371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20217155 + 20217156.

It is an arithmetic number, because the mean of its divisors is an integer number (20217156).

Almost surely, 2^40434311 is an apocalyptic number.

40434311 is a deficient number, since it is larger than the sum of its proper divisors (1).

40434311 is an equidigital number, since it uses as much as digits as its factorization.

40434311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 40434311 is about 6358.7979209910. The cubic root of 40434311 is about 343.2285052973.

Adding to 40434311 its reverse (11343404), we get a palindrome (51777715).

The spelling of 40434311 in words is "forty million, four hundred thirty-four thousand, three hundred eleven".