400403011130123 has 2 divisors, whose sum is σ = 400403011130124. Its totient is φ = 400403011130122.

The previous prime is 400403011130009. The next prime is 400403011130147. The reversal of 400403011130123 is 321031110304004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400403011130123 - 2⁸ = 400403011129867 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (400403011130183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200201505565061 + 200201505565062.

It is an arithmetic number, because the mean of its divisors is an integer number (200201505565062).

Almost surely, 2^{400403011130123} is an apocalyptic number.

400403011130123 is a deficient number, since it is larger than the sum of its proper divisors (1).

400403011130123 is an equidigital number, since it uses as much as digits as its factorization.

400403011130123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 400403011130123 its reverse (321031110304004), we get a palindrome (721434121434127).

The spelling of 400403011130123 in words is "four hundred trillion, four hundred three billion, eleven million, one hundred thirty thousand, one hundred twenty-three".