13231073 has 4 divisors (see below), whose sum is σ = 13318848. Its totient is φ = 13143300.

The previous prime is 13231067. The next prime is 13231103. The reversal of 13231073 is 37013231.

It is a happy number.

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: 37013231 = 89 ⋅415879.

It is a cyclic number.

It is not a de Polignac number, because 13231073 - 2⁸ = 13230817 is a prime.

It is a super-2 number, since 2×13231073² = 350122585462658, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13231373) 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 3 ways as a sum of consecutive naturals, for example, 43661 + ... + 43962.

It is an arithmetic number, because the mean of its divisors is an integer number (3329712).

Almost surely, 2^13231073 is an apocalyptic number.

It is an amenable number.

13231073 is a deficient number, since it is larger than the sum of its proper divisors (87775).

13231073 is an equidigital number, since it uses as much as digits as its factorization.

13231073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87774.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 13231073 is about 3637.4541921514. The cubic root of 13231073 is about 236.5184487096.

The spelling of 13231073 in words is "thirteen million, two hundred thirty-one thousand, seventy-three".