123351520107 has 16 divisors (see below), whose sum is σ = 175055081472. Its totient is φ = 76991806080.

The previous prime is 123351520037. The next prime is 123351520157. The reversal of 123351520107 is 701025153321.

It is not a de Polignac number, because 123351520107 - 2¹⁵ = 123351487339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123351520157) 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, 6321823 + ... + 6341304.

It is an arithmetic number, because the mean of its divisors is an integer number (10940942592).

Almost surely, 2^123351520107 is an apocalyptic number.

123351520107 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

123351520107 is a deficient number, since it is larger than the sum of its proper divisors (51703561365).

123351520107 is a wasteful number, since it uses less digits than its factorization.

123351520107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12663338.

The product of its (nonzero) digits is 6300, while the sum is 30.

Adding to 123351520107 its reverse (701025153321), we get a palindrome (824376673428).

The spelling of 123351520107 in words is "one hundred twenty-three billion, three hundred fifty-one million, five hundred twenty thousand, one hundred seven".