40312343 has 2 divisors, whose sum is σ = 40312344. Its totient is φ = 40312342.

The previous prime is 40312313. The next prime is 40312361. The reversal of 40312343 is 34321304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40312343 - 2¹⁰ = 40311319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40312313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20156171 + 20156172.

It is an arithmetic number, because the mean of its divisors is an integer number (20156172).

Almost surely, 2^40312343 is an apocalyptic number.

40312343 is a deficient number, since it is larger than the sum of its proper divisors (1).

40312343 is an equidigital number, since it uses as much as digits as its factorization.

40312343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 40312343 is about 6349.2001858502. The cubic root of 40312343 is about 342.8830473896.

Adding to 40312343 its reverse (34321304), we get a palindrome (74633647).

The spelling of 40312343 in words is "forty million, three hundred twelve thousand, three hundred forty-three".