123347531792 has 20 divisors (see below), whose sum is σ = 239097532716. Its totient is φ = 61644942720.

The previous prime is 123347531789. The next prime is 123347531819. The reversal of 123347531792 is 297135743321.

It can be written as a sum of positive squares in 2 ways, for example, as 50902579456 + 72444952336 = 225616^2 + 269156^2 .

It is a super-2 number, since 2×123347531792² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1766123 + ... + 1834634.

Almost surely, 2^123347531792 is an apocalyptic number.

It is an amenable number.

123347531792 is a deficient number, since it is larger than the sum of its proper divisors (115750000924).

123347531792 is a wasteful number, since it uses less digits than its factorization.

123347531792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3602906 (or 3602900 counting only the distinct ones).

The product of its digits is 952560, while the sum is 47.

The spelling of 123347531792 in words is "one hundred twenty-three billion, three hundred forty-seven million, five hundred thirty-one thousand, seven hundred ninety-two".