1023123400423 has 2 divisors, whose sum is σ = 1023123400424. Its totient is φ = 1023123400422.

The previous prime is 1023123400381. The next prime is 1023123400451. The reversal of 1023123400423 is 3240043213201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1023123400423 - 2³⁷ = 885684446951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023123406423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511561700211 + 511561700212.

It is an arithmetic number, because the mean of its divisors is an integer number (511561700212).

Almost surely, 2^{1023123400423} is an apocalyptic number.

1023123400423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023123400423 is an equidigital number, since it uses as much as digits as its factorization.

1023123400423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 1023123400423 its reverse (3240043213201), we get a palindrome (4263166613624).

The spelling of 1023123400423 in words is "one trillion, twenty-three billion, one hundred twenty-three million, four hundred thousand, four hundred twenty-three".