123319894612 has 12 divisors (see below), whose sum is σ = 215929655956. Its totient is φ = 61625707200.

The previous prime is 123319894609. The next prime is 123319894619. The reversal of 123319894612 is 216498913321.

It can be written as a sum of positive squares in 2 ways, for example, as 12426898576 + 110892996036 = 111476^2 + 333006^2 .

It is a super-2 number, since 2×123319894612² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123319894619) 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, 8551923 + ... + 8566330.

Almost surely, 2^123319894612 is an apocalyptic number.

It is an amenable number.

123319894612 is a deficient number, since it is larger than the sum of its proper divisors (92609761344).

123319894612 is a wasteful number, since it uses less digits than its factorization.

123319894612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17120058 (or 17120056 counting only the distinct ones).

The product of its digits is 559872, while the sum is 49.

The spelling of 123319894612 in words is "one hundred twenty-three billion, three hundred nineteen million, eight hundred ninety-four thousand, six hundred twelve".