1381073 has 4 divisors (see below), whose sum is σ = 1385280. Its totient is φ = 1376868.

The previous prime is 1381069. The next prime is 1381103. The reversal of 1381073 is 3701831.

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: 3701831 = 7 ⋅528833.

It is a cyclic number.

It is not a de Polignac number, because 1381073 - 2² = 1381069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1381033) 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, 1565 + ... + 2282.

It is an arithmetic number, because the mean of its divisors is an integer number (346320).

2^1381073 is an apocalyptic number.

It is an amenable number.

1381073 is a deficient number, since it is larger than the sum of its proper divisors (4207).

1381073 is an equidigital number, since it uses as much as digits as its factorization.

1381073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4206.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 1381073 is about 1175.1906228353. The cubic root of 1381073 is about 111.3624759865.

The spelling of 1381073 in words is "one million, three hundred eighty-one thousand, seventy-three".