123147012193 has 4 divisors (see below), whose sum is σ = 123765841600. Its totient is φ = 122528182788.

The previous prime is 123147012187. The next prime is 123147012221. The reversal of 123147012193 is 391210741321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 391210741321 = 967 ⋅404561263.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123147012193 is a prime.

It is a super-2 number, since 2×123147012193² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123147012493) 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, 309414405 + ... + 309414802.

It is an arithmetic number, because the mean of its divisors is an integer number (30941460400).

Almost surely, 2^123147012193 is an apocalyptic number.

It is an amenable number.

123147012193 is a deficient number, since it is larger than the sum of its proper divisors (618829407).

123147012193 is an equidigital number, since it uses as much as digits as its factorization.

123147012193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618829406.

The product of its (nonzero) digits is 9072, while the sum is 34.

The spelling of 123147012193 in words is "one hundred twenty-three billion, one hundred forty-seven million, twelve thousand, one hundred ninety-three".