40001342323 has 2 divisors, whose sum is σ = 40001342324. Its totient is φ = 40001342322.

The previous prime is 40001342321. The next prime is 40001342369. The reversal of 40001342323 is 32324310004.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40001342323 - 2¹ = 40001342321 is a prime.

Together with 40001342321, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 40001342294 and 40001342303.

It is not a weakly prime, because it can be changed into another prime (40001342321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20000671161 + 20000671162.

It is an arithmetic number, because the mean of its divisors is an integer number (20000671162).

Almost surely, 2^40001342323 is an apocalyptic number.

40001342323 is a deficient number, since it is larger than the sum of its proper divisors (1).

40001342323 is an equidigital number, since it uses as much as digits as its factorization.

40001342323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 40001342323 its reverse (32324310004), we get a palindrome (72325652327).

The spelling of 40001342323 in words is "forty billion, one million, three hundred forty-two thousand, three hundred twenty-three".