1031393 has 4 divisors (see below), whose sum is σ = 1125168. Its totient is φ = 937620.

The previous prime is 1031357. The next prime is 1031399. The reversal of 1031393 is 3931301.

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.

It is a cyclic number.

It is not a de Polignac number, because 1031393 - 2⁸ = 1031137 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1031399) 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, 46871 + ... + 46892.

It is an arithmetic number, because the mean of its divisors is an integer number (281292).

2^1031393 is an apocalyptic number.

It is an amenable number.

1031393 is a deficient number, since it is larger than the sum of its proper divisors (93775).

1031393 is an equidigital number, since it uses as much as digits as its factorization.

1031393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93774.

The product of its (nonzero) digits is 243, while the sum is 20.

The square root of 1031393 is about 1015.5752064717. The cubic root of 1031393 is about 101.0356701771.

Adding to 1031393 its reverse (3931301), we get a palindrome (4962694).

The spelling of 1031393 in words is "one million, thirty-one thousand, three hundred ninety-three".