123051211205340 has 96 divisors (see below), whose sum is σ = 377262787991040. Its totient is φ = 29719702201600.

The previous prime is 123051211205327. The next prime is 123051211205359. The reversal of 123051211205340 is 43502112150321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 123051211205298 and 123051211205307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 346367496 + ... + 346722575.

It is an arithmetic number, because the mean of its divisors is an integer number (3929820708240).

Almost surely, 2^{123051211205340} is an apocalyptic number.

123051211205340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123051211205340 is an abundant number, since it is smaller than the sum of its proper divisors (254211576785700).

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

123051211205340 is a wasteful number, since it uses less digits than its factorization.

123051211205340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693090363 (or 693090361 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 123051211205340 its reverse (43502112150321), we get a palindrome (166553323355661).

The spelling of 123051211205340 in words is "one hundred twenty-three trillion, fifty-one billion, two hundred eleven million, two hundred five thousand, three hundred forty".