123001513 has 2 divisors, whose sum is σ = 123001514. Its totient is φ = 123001512.

The previous prime is 123001507. The next prime is 123001523. The reversal of 123001513 is 315100321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80138304 + 42863209 = 8952^2 + 6547^2 .

It is a cyclic number.

It is not a de Polignac number, because 123001513 - 2²¹ = 120904361 is a prime.

It is not a weakly prime, because it can be changed into another prime (123001523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61500756 + 61500757.

It is an arithmetic number, because the mean of its divisors is an integer number (61500757).

Almost surely, 2^123001513 is an apocalyptic number.

It is an amenable number.

123001513 is a deficient number, since it is larger than the sum of its proper divisors (1).

123001513 is an equidigital number, since it uses as much as digits as its factorization.

123001513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 123001513 is about 11090.6047175075. The cubic root of 123001513 is about 497.3210224611.

Adding to 123001513 its reverse (315100321), we get a palindrome (438101834).

The spelling of 123001513 in words is "one hundred twenty-three million, one thousand, five hundred thirteen".