1031213 has 4 divisors (see below), whose sum is σ = 1034880. Its totient is φ = 1027548.

The previous prime is 1031189. The next prime is 1031231. The reversal of 1031213 is 3121301.

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: 3121301 = 19 ⋅164279.

It is a cyclic number.

It is not a de Polignac number, because 1031213 - 2⁸ = 1030957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1031194 and 1031203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031413) 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, 1373 + ... + 1986.

It is an arithmetic number, because the mean of its divisors is an integer number (258720).

2^1031213 is an apocalyptic number.

It is an amenable number.

1031213 is a deficient number, since it is larger than the sum of its proper divisors (3667).

1031213 is an equidigital number, since it uses as much as digits as its factorization.

1031213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3666.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1031213 is about 1015.4865828754. The cubic root of 1031213 is about 101.0297922112.

Adding to 1031213 its reverse (3121301), we get a palindrome (4152514).

The spelling of 1031213 in words is "one million, thirty-one thousand, two hundred thirteen".