123103311431530 has 32 divisors (see below), whose sum is σ = 227712251916864. Its totient is φ = 47889756087936.

The previous prime is 123103311431519. The next prime is 123103311431531. The reversal of 123103311431530 is 35134113301321.

It is a junction number, because it is equal to n+sod(n) for n = 123103311431492 and 123103311431501.

It is not an unprimeable number, because it can be changed into a prime (123103311431531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 614249104 + ... + 614449483.

It is an arithmetic number, because the mean of its divisors is an integer number (7116007872402).

Almost surely, 2^{123103311431530} is an apocalyptic number.

123103311431530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123103311431530 is a deficient number, since it is larger than the sum of its proper divisors (104608940485334).

123103311431530 is a wasteful number, since it uses less digits than its factorization.

123103311431530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228698870.

The product of its (nonzero) digits is 9720, while the sum is 31.

Adding to 123103311431530 its reverse (35134113301321), we get a palindrome (158237424732851).

The spelling of 123103311431530 in words is "one hundred twenty-three trillion, one hundred three billion, three hundred eleven million, four hundred thirty-one thousand, five hundred thirty".