503123000366123 has 2 divisors, whose sum is σ = 503123000366124. Its totient is φ = 503123000366122.

The previous prime is 503123000366069. The next prime is 503123000366143. The reversal of 503123000366123 is 321663000321305.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 503123000366123 - 2¹⁶ = 503123000300587 is a prime.

It is a super-2 number, since 2×503123000366123² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (503123000366143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251561500183061 + 251561500183062.

It is an arithmetic number, because the mean of its divisors is an integer number (251561500183062).

Almost surely, 2^{503123000366123} is an apocalyptic number.

503123000366123 is a deficient number, since it is larger than the sum of its proper divisors (1).

503123000366123 is an equidigital number, since it uses as much as digits as its factorization.

503123000366123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 35.

Adding to 503123000366123 its reverse (321663000321305), we get a palindrome (824786000687428).

The spelling of 503123000366123 in words is "five hundred three trillion, one hundred twenty-three billion, three hundred sixty-six thousand, one hundred twenty-three".