123153512 has 16 divisors (see below), whose sum is σ = 231660000. Its totient is φ = 61377520.

The previous prime is 123153461. The next prime is 123153521. The reversal of 123153512 is 215351321.

It is a happy number.

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, 22262 + ... + 27237.

It is an arithmetic number, because the mean of its divisors is an integer number (14478750).

Almost surely, 2^123153512 is an apocalyptic number.

It is an amenable number.

123153512 is a deficient number, since it is larger than the sum of its proper divisors (108506488).

123153512 is a wasteful number, since it uses less digits than its factorization.

123153512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49816 (or 49812 counting only the distinct ones).

The product of its digits is 900, while the sum is 23.

The square root of 123153512 is about 11097.4552037843. The cubic root of 123153512 is about 497.5257927925.

The spelling of 123153512 in words is "one hundred twenty-three million, one hundred fifty-three thousand, five hundred twelve".