123047013 has 4 divisors (see below), whose sum is σ = 164062688. Its totient is φ = 82031340.

The previous prime is 123047011. The next prime is 123047017. The reversal of 123047013 is 310740321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310740321 = 3 ⋅103580107.

It is not a de Polignac number, because 123047013 - 2¹ = 123047011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123047011) 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, 20507833 + ... + 20507838.

It is an arithmetic number, because the mean of its divisors is an integer number (41015672).

Almost surely, 2^123047013 is an apocalyptic number.

It is an amenable number.

123047013 is a deficient number, since it is larger than the sum of its proper divisors (41015675).

123047013 is an equidigital number, since it uses as much as digits as its factorization.

123047013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41015674.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 123047013 is about 11092.6558136454. The cubic root of 123047013 is about 497.3823369290.

Adding to 123047013 its reverse (310740321), we get a palindrome (433787334).

The spelling of 123047013 in words is "one hundred twenty-three million, forty-seven thousand, thirteen".