400116323 has 2 divisors, whose sum is σ = 400116324. Its totient is φ = 400116322.

The previous prime is 400116319. The next prime is 400116359. The reversal of 400116323 is 323611004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400116323 - 2² = 400116319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400116295 and 400116304.

It is not a weakly prime, because it can be changed into another prime (400116623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200058161 + 200058162.

It is an arithmetic number, because the mean of its divisors is an integer number (200058162).

Almost surely, 2^400116323 is an apocalyptic number.

400116323 is a deficient number, since it is larger than the sum of its proper divisors (1).

400116323 is an equidigital number, since it uses as much as digits as its factorization.

400116323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 400116323 is about 20002.9078636082. The cubic root of 400116323 is about 736.8777157384.

Adding to 400116323 its reverse (323611004), we get a palindrome (723727327).

The spelling of 400116323 in words is "four hundred million, one hundred sixteen thousand, three hundred twenty-three".