123453513 has 6 divisors (see below), whose sum is σ = 178321754. Its totient is φ = 82302336.

The previous prime is 123453487. The next prime is 123453527. The reversal of 123453513 is 315354321.

123453513 is a `hidden beast` number, since 123 + 4 + 535 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 117679104 + 5774409 = 10848^2 + 2403^2 .

It is not a de Polignac number, because 123453513 - 2¹⁰ = 123452489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123453713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6858520 + ... + 6858537.

Almost surely, 2^123453513 is an apocalyptic number.

It is an amenable number.

123453513 is a deficient number, since it is larger than the sum of its proper divisors (54868241).

123453513 is a wasteful number, since it uses less digits than its factorization.

123453513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13717063 (or 13717060 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 123453513 is about 11110.9636395769. The cubic root of 123453513 is about 497.9294548546.

The spelling of 123453513 in words is "one hundred twenty-three million, four hundred fifty-three thousand, five hundred thirteen".