123310136560 has 80 divisors (see below), whose sum is σ = 308820859200. Its totient is φ = 45519390720.

The previous prime is 123310136557. The next prime is 123310136563. The reversal of 123310136560 is 65631013321.

It is an interprime number because it is at equal distance from previous prime (123310136557) and next prime (123310136563).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123310136563) 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, 5603980 + ... + 5625940.

It is an arithmetic number, because the mean of its divisors is an integer number (3860260740).

Almost surely, 2^123310136560 is an apocalyptic number.

123310136560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123310136560 is an abundant number, since it is smaller than the sum of its proper divisors (185510722640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123310136560 is a wasteful number, since it uses less digits than its factorization.

123310136560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27386 (or 27380 counting only the distinct ones).

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

Adding to 123310136560 its reverse (65631013321), we get a palindrome (188941149881).

The spelling of 123310136560 in words is "one hundred twenty-three billion, three hundred ten million, one hundred thirty-six thousand, five hundred sixty".