123503520351 has 16 divisors (see below), whose sum is σ = 165475680768. Its totient is φ = 81933633600.

The previous prime is 123503520311. The next prime is 123503520359. The reversal of 123503520351 is 153025305321.

It is not a de Polignac number, because 123503520351 - 2¹³ = 123503512159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123503520359) 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, 7765930 + ... + 7781816.

It is an arithmetic number, because the mean of its divisors is an integer number (10342230048).

Almost surely, 2^123503520351 is an apocalyptic number.

123503520351 is a deficient number, since it is larger than the sum of its proper divisors (41972160417).

123503520351 is a wasteful number, since it uses less digits than its factorization.

123503520351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28382.

The product of its (nonzero) digits is 13500, while the sum is 30.

Adding to 123503520351 its reverse (153025305321), we get a palindrome (276528825672).

The spelling of 123503520351 in words is "one hundred twenty-three billion, five hundred three million, five hundred twenty thousand, three hundred fifty-one".