40312463 has 2 divisors, whose sum is σ = 40312464. Its totient is φ = 40312462.

The previous prime is 40312439. The next prime is 40312483. The reversal of 40312463 is 36421304.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40312463 - 2²⁴ = 23535247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40312403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20156231 + 20156232.

It is an arithmetic number, because the mean of its divisors is an integer number (20156232).

Almost surely, 2^40312463 is an apocalyptic number.

40312463 is a deficient number, since it is larger than the sum of its proper divisors (1).

40312463 is an equidigital number, since it uses as much as digits as its factorization.

40312463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 40312463 is about 6349.2096358523. The cubic root of 40312463 is about 342.8833876157.

Adding to 40312463 its reverse (36421304), we get a palindrome (76733767).

The spelling of 40312463 in words is "forty million, three hundred twelve thousand, four hundred sixty-three".