123198352747 has 4 divisors (see below), whose sum is σ = 125217997936. Its totient is φ = 121178707560.

The previous prime is 123198352727. The next prime is 123198352777. The reversal of 123198352747 is 747253891321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 747253891321 = 7 ⋅106750555903.

It is a cyclic number.

It is not a de Polignac number, because 123198352747 - 2³¹ = 121050869099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123198352694 and 123198352703.

It is not an unprimeable number, because it can be changed into a prime (123198352727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1009822503 + ... + 1009822624.

It is an arithmetic number, because the mean of its divisors is an integer number (31304499484).

Almost surely, 2^123198352747 is an apocalyptic number.

123198352747 is a deficient number, since it is larger than the sum of its proper divisors (2019645189).

123198352747 is an equidigital number, since it uses as much as digits as its factorization.

123198352747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019645188.

The product of its digits is 2540160, while the sum is 52.

The spelling of 123198352747 in words is "one hundred twenty-three billion, one hundred ninety-eight million, three hundred fifty-two thousand, seven hundred forty-seven".