80123013 has 10 divisors (see below), whose sum is σ = 119690054. Its totient is φ = 53415288.

The previous prime is 80122993. The next prime is 80123039. The reversal of 80123013 is 31032108.

It can be written as a sum of positive squares in only one way, i.e., 59629284 + 20493729 = 7722^2 + 4527^2 .

It is not a de Polignac number, because 80123013 - 2¹⁰ = 80121989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80123063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 494506 + ... + 494667.

Almost surely, 2^80123013 is an apocalyptic number.

It is an amenable number.

80123013 is a deficient number, since it is larger than the sum of its proper divisors (39567041).

80123013 is an equidigital number, since it uses as much as digits as its factorization.

80123013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989185 (or 989176 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 80123013 is about 8951.1459042963. The cubic root of 80123013 is about 431.1076777993.

It can be divided in two parts, 8012 and 3013, that added together give a square (11025 = 105²).

The spelling of 80123013 in words is "eighty million, one hundred twenty-three thousand, thirteen".